Tootfinder

Field-induced condensation of $\pi$ to 2$\pi$ soliton lattices in chiral magnets
M. Winter, A. Pignedoli, M. C. Rahn, A. S. Sukhanov, B. Achinuq, J. R. Bollard, M. Azhar, K. Everschor-Sitte, D. Pohl, S. Schneider, A. Tahn, V. Ukleev, M. Valvidares, A. Thomas, D. Wolf, P. Vir, T. Helm, G. van der Laan, T. Hesjedal, J. Geck, C. Felser, B. Rellinghaus
https://

Field-induced condensation of $π$ to 2$π$ soliton lattices in chiral magnets
Chiral soliton lattices (CSLs) are nontrivial spin textures that emerge from the competition between Dzyaloshinskii-Moriya interaction, anisotropy, and magnetic fields. While well established in monoaxial helimagnets, their role in materials with anisotropic, direction-dependent chirality remains poorly understood. Here, we report the direct observation of a tunable transition from $π$ to 2$π$ soliton lattices in the non-centrosymmetric Heusler compound Mn1.4PtSn. Using Lorentz transmission e…

Switching magnetic texture via in-plane magnetic field in noncentrosymmetric dipolar magnets: From skyrmions to antiskyrmions and nontopological magnetic bubbles
Tatsuki Muto, Masahito Mochizuki
https://arxiv.org/abs/2509.10028

Switching magnetic texture via in-plane magnetic field in noncentrosymmetric dipolar magnets: From skyrmions to antiskyrmions and nontopological magnetic bubbles
We theoretically investigate field-induced switching of magnetic topology in a nanodisk-shaped sample of noncentrosymmetric dipolar magnet in which the Dzyaloshinskii-Moriya interaction that stabilizes an antiskyrmion with $N_{\rm sk}$=+1 and the magnetic dipole interaction that stabilizes a skyrmion with $N_{\rm sk}$=$-1$ are in keen competition where $N_{\rm sk}$ is the skyrmion number. Our micromagnetic simulations demonstrate that the competition offers a unique opportunity to switch magnet…

Possible Bose-Einstein condensation of magnons in a S = 5/2 honeycomb lattice
J. Khatua, S. M. Kumawat, G. Senthil Murugan, C. -L. Huang, Heung-Sik Kim, K. Sritharan, R. Sankar, Kwang-Yong Choi
https://arxiv.org/abs/2510.12682

Possible Bose-Einstein condensation of magnons in a S = 5/2 honeycomb lattice
Quantum magnets offer a unique platform for exploring exotic quantum phases and quantum phase transitions through external magnetic fields. A prominent example is the field-induced Bose--Einstein condensation (BEC) of magnons near the saturation field. While this behavior has been observed in low-spin systems, its realization in high-spin, quasi-two-dimensional magnets -- where multiple on-site excitations are possible -- remains exceptionally rare. Here, we report thermodynamic and density fun…

When the fool thinks he sounds smart because someone explained it to him like a 5yo.
Trump:
▫️"No one knows what magnets are."
Translation:
▫️"I didn't know what magnets are."
#trump

Adjoint ferromagnets
Joaqu\'in L\'opez-Su\'arez, Alexios P. Polychronakos, Konstantinos Sfetsos
https://arxiv.org/abs/2510.11776 https://arxiv.…

Adjoint ferromagnets
We derive the phase structure and thermodynamics of ferromagnets consisting of elementary magnets carrying the adjoint representation of $SU(N)$ and coupled through two-body quadratic interactions. Such systems have a continuous $SU(N)$ symmetry as well as a discrete conjugation symmetry. We uncover a rich spectrum of phases and transitions, involving a paramagnetic and two distinct ferromagnetic phases that can coexist as stable and metastable states in different combinations over a range of t…

Universality of critical behaviors in the three-dimensional (3D) Ising magnets
Zhidong Zhang
https://arxiv.org/abs/2510.09111 https://arxiv.org/pdf/2510.09…

Universality of critical behaviors in the three-dimensional (3D) Ising magnets
This article gives a brief overview on recent advances in experiments of critical exponents in three groups of magnetic materials. Revisiting experimental data verifies that a universality class with the critical exponents beta = 3/8, gamma = 5/4 and delta = 13/3 occurs in the three-dimensional (3D) Ising magnets, such as transition-metal intermetallics, rare-earth transition-metal compounds and manganites. Furthermore, the topological contributions to critical behaviors in the 3D Ising model a…

Near room temperature magnetoelectric response and tunable magnetic anisotropy in the two-dimensional magnet 1T-CrTe2
Fengping Li, Bheema Lingam Chittari, Chao Lei, Jeil Jung
https://arxiv.org/abs/2510.10547

Near room temperature magnetoelectric response and tunable magnetic anisotropy in the two-dimensional magnet 1T-CrTe2
Magnets with controllable magnetization and high critical temperature are essential for practical spintronics devices, among which the two-dimensional 1T-CrTe2 stands out because of its high experimental critical temperature up to about 300K down to the single layer limit. By using ab initio density functional theory, we investigate the magnetic properties of monolayer and bilayer 1T-CrTe2 and demonstrate that the magnetic properties, such as the magnetocrystalline anisotropy, critical Curie te…

Screening currents increase thermal quench propagation speed in ultra-high-field REBCO magnets
Enric Pardo, Anang Dadhich, Nikola Jerance, Philippe Fazilleau
https://arxiv.org/abs/2509.06621

Screening currents increase thermal quench propagation speed in ultra-high-field REBCO magnets
Superconducting REBCO ($RE$Ba$_2$Cu$_3$O$_{7-x}$, where $RE$ is a rare earth, typically Y, Gd or Eu) electromagnets are useful for many applications like medical magnetic resonace imaging (MRI), nuclear magnetic resonance (NMR) spectroscopy, and magnets for particle accelerators and detectors. REBCO magnets are also the core of many nuclear fusion energy start-ups. In order to avoid permanent damage during operation, magnet design needs to take electro-thermal quench into account, which is due …

Cubic magnetic anisotropy in $B$20 magnets: Interplay of anisotropy and magnetic order in Fe$_{1-x}$Co$_{x}$Si
G. G\"odecke, A. O. Leonov, J. Grefe, S. S\"ullow, D. Menzel
https://arxiv.org/abs/2510.09268

Cubic magnetic anisotropy in $B$20 magnets: Interplay of anisotropy and magnetic order in Fe$_{1-x}$Co$_{x}$Si
The metallic systems MnSi and Fe$_{1-x}$Co$_{x}$Si are known to feature a generic magnetic phase diagram primarily determined by the isotropic exchange and Dzyaloshinskii-Moriya interactions. However, additional weaker anisotropies, lowest in the hierarchy of energy scales, play a crucial role: they determine the relative order of phases in the phase diagram and may even enable skyrmion stability far below the ordering temperature. Among cubic B20 helimagnets, the insulator Cu$_2$OSeO$_3$ is cu…

Replaced article(s) found for cond-mat.other. https://arxiv.org/list/cond-mat.other/new
[1/1]:
- Spin Symmetry Criteria for Odd-parity Magnets
Xun-Jiang Luo, Jin-Xin Hu, K. T. Law

Hysteresis and the Barkhausen noise in magnets
Deepak Dhar, Sanjib Sabhapandit
https://arxiv.org/abs/2509.08536 https://arxiv.org/pdf/2509.08536

Hysteresis and the Barkhausen noise in magnets
We provide an overview of studies of hysteresis in models of magnets. We discuss the shape of the hysteresis loop, dynamical symmetry breaking, and the dependence of the area of the loop on the amplitude and frequency of the driving field. The Barkhausen noise in the hysteresis loop may be modelled by the wide distribution of sizes of magnetization jumps in the random-field Ising model. We discuss the distribution of sizes of these jumps in the random field Ising model on the Bethe lattice.

Spin-qubit Noise Spectroscopy of Magnetic Berezinskii-Kosterlitz-Thouless Physics
Mark Potts, Shu Zhang
https://arxiv.org/abs/2509.10309 https://arxiv.org/…

Spin-qubit Noise Spectroscopy of Magnetic Berezinskii-Kosterlitz-Thouless Physics
We propose using spin-qubit noise magnetometry to probe dynamical signatures of magnetic Berezinskii-Kosterlitz-Thouless (BKT) physics. For a nitrogen-vacancy (NV) center coupled to two-dimensional XY magnets, we predict distinctive features in the magnetic noise spectral density in the sub-MHz to GHz frequency range. In the quasi-long-range ordered phase, the spectrum exhibits a temperature-dependent power law characteristic of algebraic spin correlations. Above the transition, the noise refle…

A Dynamic Energy-Based Hysteresis Model for Pulsed-Operated Fast-Ramping Magnets
Dominik Moll, Laura A. M. D'Angelo, Herbert De Gersem, Fulvio Boattini, Luca Bottura, Marco Gast
https://arxiv.org/abs/2509.04115

A Dynamic Energy-Based Hysteresis Model for Pulsed-Operated Fast-Ramping Magnets
Due to the strongly nonlinear behavior of ferromagnetic yokes, the numerical analysis of fast-ramping magnets is highly cumbersome and, therefore, in practice overly simplified by means of anhysteretic material descriptions and a posteriori loss formulae. This paper establishes the use of a dynamic ferromagnetic model combining a preconditioned energy-based hysteresis description and a thin-sheet eddy-current model in time-domain. The model was successfully employed in the analysis of a normal-…

Two-Dimensional Altermagnetism in Epitaxial CrSb Ultrathin Films
Keren Li, Yuzhong Hu, Yue Li, Ruohang Xu, Heping Li, Kun Liu, Chen Liu, Jincheng Zhuang, Yee Sin Ang, Jiaou Wang, Haifeng Feng, Weichang Hao, Yi Du
https://arxiv.org/abs/2510.12344

Two-Dimensional Altermagnetism in Epitaxial CrSb Ultrathin Films
Altermagnets constitute an emerging class of collinear magnets that exhibit zero net magnetization yet host spin-split electronic bands arising from non-relativistic spin-space-group symmetries. Realization of altermagnetism in the two-dimensional (2D) limit remains an outstanding challenge because dimensional reduction suppresses kZ dispersion and destabilizes the symmetry operations essential for spin compensation. Here, we demonstrate genuine 2D altermagnetism in epitaxial unit-cell-thin fil…

RefAM: Attention Magnets for Zero-Shot Referral Segmentation
Anna Kukleva, Enis Simsar, Alessio Tonioni, Muhammad Ferjad Naeem, Federico Tombari, Jan Eric Lenssen, Bernt Schiele
https://arxiv.org/abs/2509.22650

RefAM: Attention Magnets for Zero-Shot Referral Segmentation
Most existing approaches to referring segmentation achieve strong performance only through fine-tuning or by composing multiple pre-trained models, often at the cost of additional training and architectural modifications. Meanwhile, large-scale generative diffusion models encode rich semantic information, making them attractive as general-purpose feature extractors. In this work, we introduce a new method that directly exploits features, attention scores, from diffusion transformers for downstr…

Trump says 'nobody needed magnets' until '20 years ago' because of China - Raw Story
https://www.rawstory.com/donald-trump-magnets-2673916711/

Simultaneous Multi-Scale Homogeneous H-Phi Thin-Shell Model for Efficient Simulations of Stacked HTS Coils
Louis Denis, Beno\^it Vanderheyden, Christophe Geuzaine
https://arxiv.org/abs/2510.09122

Simultaneous Multi-Scale Homogeneous H-Phi Thin-Shell Model for Efficient Simulations of Stacked HTS Coils
The simulation of large-scale high-temperature superconducting (HTS) magnets is a computational challenge due to the multiple spatial scales involved, from the magnet to the detailed turn-to-turn geometry. To reduce the computational cost associated with finite-element (FE) simulations of insulated HTS coils, the simultaneous multi-scale homogeneous (SMSH) method can be considered. It combines a macroscopic-scale homogenized magnet model with multiple single-tape models and solves both scales m…

An Approach for Restoring Magnetic Field Uniformity in Openable BIPM-Type Kibble Balance Magnets
Nanjia Li, Weibo Liu, Yongchao Ma, Wei Zhao, Songling Huang, Shisong Li
https://arxiv.org/abs/2510.04729

An Approach for Restoring Magnetic Field Uniformity in Openable BIPM-Type Kibble Balance Magnets
The Kibble balance realizes the kilogram by linking mechanical and electrical quantities via a magnet system. In an improved BIPM-type magnet design by Tsinghua University, an open/close surface was incorporated, facilitating operation. However, an unavoidable mechanical air gap at the splitting plane introduces asymmetry in the magnetic flux density profile, degrading field uniformity. This study proposes a two-step yoke compensation method to restore symmetry by adjusting the upper outer yoke…

Souped-up fridge #silentsunday

Lifetime of bimerons and antibimerons in two-dimensional magnets
Moritz A. Goerzen, Tim Drevelow, Soumyajyoti Haldar, Hendrik Schrautzer, Stefan Heinze, Dongzhe Li
https://arxiv.org/abs/2509.09344

Lifetime of bimerons and antibimerons in two-dimensional magnets
Soliton-based computing architectures have recently emerged as a promising avenue to overcome fundamental limitations of conventional information technologies, the von Neumann bottleneck. In this context, magnetic skyrmions have been widely considered for in-situ processing devices due to their mobility and enhanced lifetime in materials with broken inversion symmetry. However, modern applications in non-volatile reservoir or neuromorphic computing raise the additional demand for non-linear int…

Dirac monopole magnets in non-Hermitian systems
Haiyang Yu, Tao Jiang, Li-Chen Zhao
https://arxiv.org/abs/2508.15186 https://arxiv.org/pdf/2508.15186

Dirac monopole magnets in non-Hermitian systems
We theoretically establish that non-Hermitian perturbations induce a topological transformation of point-like Dirac monopoles into extended monopole distributions, characterized by distinct charge configurations emergent from three distinct Berry connection forms. Using piecewise adiabatic evolution, we confirm the validity of these configurations through observations of complex geometric phases. Most critically, we find a quantitative relation $Δϕ_d = Δϕ_g$, which quantifies how cumulative…

Algebraic magnetism stratification of the double scalar action on the projective plane
Arnaud Mayeux
https://arxiv.org/abs/2509.04274 https://arxiv.org/pdf…

Algebraic magnetism stratification of the double scalar action on the projective plane
We determine the pure magnets (certain monoids) for the double scalar action of $\mathbb{G}_m^2$ on $\mathbb{P}^2$, and compute the associated attractors, yielding a canonical, fully explicit stratification. This provides a concrete non-affine example illustrating the invariants of Algebraic Magnetism.

Low-Temperature Skyrmions and Spiral Reorientation Processes in Chiral Magnets with Cubic Anisotropy: Guidelines for Bridging Theory and Experiment
A. O. Leonov, G. G\"odecke, J. Grefe, S. S\"ullow, D. Menzel
https://arxiv.org/abs/2510.07640

Low-Temperature Skyrmions and Spiral Reorientation Processes in Chiral Magnets with Cubic Anisotropy: Guidelines for Bridging Theory and Experiment
We revisit the phenomenological Dzyaloshinskii framework, a central theoretical approach for describing magnetization processes in bulk chiral magnets, and demonstrate how magnetocrystalline cubic anisotropy reshapes the phase diagrams of states and provides the key mechanism stabilizing low-temperature skyrmion phases. We show that, for magnetic field directions along the easy anisotropy axes, the phase diagrams feature stable skyrmion pockets for both signs of the anisotropy constant. We furt…

Transient localization from fractionalization: vanishingly small heat conductivity in gapless quantum magnets
Shi Feng, Penghao Zhu, Johannes Knolle, Michael Knap
https://arxiv.org/abs/2509.07062

Transient localization from fractionalization: vanishingly small heat conductivity in gapless quantum magnets
Several candidate materials for gapless quantum spin liquids exhibit a vanishing thermal conductivity, which is at odds with theoretical predictions. Here, we show that a suppressed response can arise due to transient localization from fractionalization, even in the absence of extrinsic defects or disorder. Concretely, we consider a Kitaev ladder model in a uniform magnetic field, whose spin degrees of freedom fractionalize into visons and spinons. For moderate magnetic fields, visons are heavy…

Make decorating your laptop more fun: instead of stickers, use fridge magnets for a custom style that you can easily rearrange at any time!
#LLMTrainingData

Dual-Mode Magnetic Continuum Robot for Targeted Drug Delivery
Wendu Zhang, Heng Wang, Shuangyi Wang, Yuanrui Huang
https://arxiv.org/abs/2510.01761 https://

Dual-Mode Magnetic Continuum Robot for Targeted Drug Delivery
Magnetic continuum robots (MCRs) enable minimally invasive navigation through tortuous anatomical channels, yet axially magnetized designs have largely been limited to bending-only motion. To expand deformation capabilities, this paper presents a simple assembly that embeds permanent magnets radially within the catheter wall, allowing a single externally steered permanent magnet to independently induce either bending or torsion. A physics-based formulation together with finite-element analysis …

Spin Symmetry Criteria for Odd-parity Magnets
Xun-Jiang Luo, Jin-Xin Hu, K. T. Law
https://arxiv.org/abs/2510.05512 https://arxiv.org/pdf/2510.05512…

Spin Symmetry Criteria for Odd-parity Magnets
Inspired by the discovery of altermagnets, which exhibit even-parity nonrelativistic spin splitting, odd-parity magnets (OPMs) have been proposed and emerged as a novel research frontier. In this study, we perform a comprehensive spin group symmetry analysis to establish symmetry criteria for the emergence of OPMs. We identify eight distinct symmetry-driven cases that support OPMs, enabling their realization in collinear, coplanar, and noncoplanar magnetic orders. These OPMs are categorized int…

Had a magnetic mounting plate for a smoke detector that was glued to the ceiling and no longer in use after I got a new smoke detector.
And since it was annoying and ugly, and next to a moon lamp, there was only one thing I could realistically do, right?
3D print a Saturn V rocket and attach it with magnets.
#3dprinting

Tunable Chern Insulator States with Coexisting Magnonic and Electronic Topology in 2D Honeycomb Kitaev Ferromagnets
Haozhou Cai, Zhiming Xu, Jian Wu, Weiyi Pan
https://arxiv.org/abs/2510.09235

Tunable Chern Insulator States with Coexisting Magnonic and Electronic Topology in 2D Honeycomb Kitaev Ferromagnets
The coexistence of topological magnons and electrons in magnetic materials presents a compelling route toward developing low-dissipation, multifunctional spintronic devices. However, material systems enabling their simultaneous realization and control remain largely unexplored. Here, we propose the coexistence and concurrent tunability of magnonic and electronic Chern insulator phases in Kitaev magnets and use MnBr$_{3}$ monolayer as a prototype. We find the significant Kitaev interaction in Mn…

Probing high-frequency gravitational waves with entangled vibrational qubits in linear Paul traps
Ryoto Takai
https://arxiv.org/abs/2509.22475 https://arxi…

Probing high-frequency gravitational waves with entangled vibrational qubits in linear Paul traps
This work investigates the use of linear Paul traps as quantum sensors for detecting megahertz gravitational waves. Single-ion configurations exploit graviton-photon conversion in the presence of external magnetic fields, while two-ion systems use relative-motion excitations, which do not require magnets, to distinguish gravitational waves from axion dark matter. Furthermore, we show that entanglement of $N$ vibrational qubits enhances the signal probability by a factor of $N^2$, improving sens…

Diameter-Controlled High-Order Vortex States and Magnon Hybridization in VSe2 Nanotubes
Jia-Wen Li, Xin-Wei Yi, Jin Zhang, Gang Su, Bo Gu
https://arxiv.org/abs/2509.08368 https:…

Diameter-Controlled High-Order Vortex States and Magnon Hybridization in VSe2 Nanotubes
Curved magnets offer a rich phase diagram and hold great promise for next-generation spintronic technologies. This study establishes the paramount significance of high-order vortex states (e.g., 3$φ$ with winding number $n$ > 1) in VSe2 nanotubes, which uniquely enable magnonic functionalities fundamentally inaccessible to conventional magnetic systems. These states arise from diameter-dependent competition between the nearest-neighbor ferromagnetic ($J_1$) and longer-range antiferromagnetic (…

Oakridge PPU Magnets: Results and Measurements
J. DiMarco, D. Harding, V. Kashikhin, O. Kiemschies, M. Kifarkis, A. Makulski, J. Nogiec, S. Stoynev, T. Strauss, M. Tartaglia, P. Thompson
https://arxiv.org/abs/2509.13455

Oakridge PPU Magnets: Results and Measurements
The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL) is being upgraded from 1.0 GeV to 1.3 GeV (or 1.4 to 2.8 MW). Several water-cooled magnets have been upgraded to transport 30% higher beam energy. Fermilab contributed the magnet design for the new chicane magnets and injection/extraction septum. Designing the magnets was a challenging task because the new magnets required good combined integrated field quality and needed to occupy the old magnets space but with about 2…

Anisotropic resistivity of a $p$-wave magnet candidate CeNiAsO
Honglin Zhou, Muyu Wang, Xiaoyan Ma, Gang Li, Ding-Fu Shao, Bo Liu, Shiliang Li
https://arxiv.org/abs/2509.07351 h…

Anisotropic resistivity of a $p$-wave magnet candidate CeNiAsO
Certain noncollinear antiferromagnets host momentum-dependent spin-splitting bands with odd-parity $p$-wave symmetry, termed $p$-wave magnets. Metallic $p$-wave magnets offer a unique platform for spintronic applications, yet experimental realizations remain scarce. CeNiAsO, featuring a tetragonal structure and developing a commensurate coplanar noncollinear antiferromagnetic order at low temperatures, has been theoretically proposed as such a magnet. Here, we show that its resistivity exhibits…

Kitaev-derived Gapless Spin Liquid in the $K$-$J$-$\Gamma$-$\Gamma'$ Quantum Magnet Na$_2$Co$_2$TeO$_6$
Han Li, Xu-Guang Zhou, Gang Su, Wei Li
https://arxiv.org/abs/2509.08821

Kitaev-derived Gapless Spin Liquid in the $K$-$J$-$Γ$-$Γ'$ Quantum Magnet Na$_2$Co$_2$TeO$_6$
The realization of quantum spin liquids (QSLs) in Kitaev magnets represents an intriguing topic in frustrated quantum magnetism. Despite prediction in the pure Kitaev honeycomb model, realization of QSLs in realistic systems and materials remain scarce. The recent discovery of cobalt-based compound Na$_2$Co$_2$TeO$_6$ has raised significant research interest. By establishing a realistic $K$-$J$-$Γ$-$Γ'$ model for Na$_2$Co$_2$TeO$_6$ -- with a dominant antiferromagnetic (AFM) Kitaev interactio…

Nudging the Somas: Exploring How Live-Configurable Mixed Reality Objects Shape Open-Ended Intercorporeal Movements
Botao Amber Hu, Yilan Elan Tao, Rem RunGu Lin, Mingze Chai, Yuemin Huang, Rakesh Patibanda
https://arxiv.org/abs/2509.14432

Nudging the Somas: Exploring How Live-Configurable Mixed Reality Objects Shape Open-Ended Intercorporeal Movements
Mixed Reality (MR) experiences increasingly explore how virtual elements can shape physical behaviour, yet how MR objects guide group movement remains underexplored. We address this gap by examining how virtual objects can nudge collective, co-located movement without relying on explicit instructions or choreography. We developed GravField, a co-located MR performance system where an "object jockey" live-configures virtual objects, springs, ropes, magnets, with real-time, parameterised "digital…

Replaced article(s) found for cond-mat.quant-gas. https://arxiv.org/list/cond-mat.quant-gas/new
[1/1]:
- Origin of the hidden energy scale and the $f$-ratio in geometrically frustrated magnets
Phillip Popp, Arthur P. Ramirez, Sergey Syzranov

Nonperturbative Semiclassical Spin Dynamics for Ordered Quantum Magnets
Hao Zhang, Tianyue Huang, Allen O. Scheie, Mengze Zhu, Tao Xie, N. Murai, S. Ohira-Kawamura, Andrey Zheludev, Andreas M. L\"auchli, Cristian D. Batista
https://arxiv.org/abs/2508.21142

Nonperturbative Semiclassical Spin Dynamics for Ordered Quantum Magnets
In ordered quantum magnets where interactions between elementary excitations dominate over their kinetic energy, perturbative approaches often fail, making non-perturbative methods essential to capture spectral features such as bound states and the redistribution of weight within excitation continua. Although an increasing number of experiments report anomalous spin excitation continua in such systems, their microscopic interpretation remains an open challenge. Here, we investigate the spin dyn…

Twist-tuned exchange and hysteresis in a bilayer van der Waals magnet
Priyanka Mondal, Sonu Verma, Wenze Lan, Lukas Krelle, Ryan Tan, Regine von Klitzing, Kenji Watanabe, Takashi Taniguchi, Kseniia Mosina, Zdenek Sofer, Akashdeep Kamra, Bernhard Urbaszek
https://arxiv.org/abs/2510.08018

Twist-tuned exchange and hysteresis in a bilayer van der Waals magnet
Moiré superlattices in twisted bilayers enable profound reconstructions of the electronic bandstructure, giving rise to correlated states with remarkable tunability. Extending this paradigm to van der Waals magnets, twisting creates spatially varying interlayer exchange interactions that stabilize emergent spin textures and the coexistence of ferromagnetic and antiferromagnetic domains. Here, we demonstrate the emergence of robust magnetic hysteresis in bilayer CrSBr upon twisting by an angle …

Crosslisted article(s) found for cond-mat.supr-con. https://arxiv.org/list/cond-mat.supr-con/new
[1/1]:
- Hunting for superconductivity in doped triangular lattice Kitaev magnets
Andrew Hardy, Ryan Levy, Arun Paramekanti

Quantum Random Synthetic Skyrmion Texture Generation, a Qiskit Simulation
Hillol Biswas
https://arxiv.org/abs/2509.18947 https://arxiv.org/pdf/2509.18947…

Quantum Random Synthetic Skyrmion Texture Generation, a Qiskit Simulation
An integer winding, i.e., topological charge, is a characteristic of skyrmions, which are topologically nontrivial spin patterns in magnets. They emerge when smooth two-dimensional spin configurations are stabilized by conflicting interactions such as exchange, anisotropy, the Dzyaloshinskii-Moriya interaction, or geometric frustration. These nanoscale textures, which are typically a few to tens of nanometers in size, are strong 'particle-like' excitations because they are shielded by energy ba…

Algebraic Magnetism Invariants of Self-Actions of Diagonalizable Monoid Schemes
Arnaud Mayeux
https://arxiv.org/abs/2508.17793 https://arxiv.org/pdf/2508.1…

Algebraic Magnetism Invariants of Self-Actions of Diagonalizable Monoid Schemes
We provide a method to compute the pure magnets of the action of a diagonalizable monoid scheme on itself. This is described in terms of minimal generators of the sharp monoid obtained quotienting by the face of invertible elements. In particular, in this example, algebraic magnetism detects sharpness and minimal generators of the monoid modulo invertible elements.

Direct observation of nanoscale pinning centers in Ce(Co0.8Cu0.2)5.4 permanent magnets
Nikita Polin, Shangbin Shen, Fernando Maccari, Alex Aubert, Esmaeil Adabifiroozjaei, Tatiana Smoliarova, Yangyiwei Yang, Xinren Chen, Yurii Skourski, Alaukik Saxena, Andr\'as Kov\'acs, Rafal E. Dunin-Borkowski, Michael Farle, Bai-Xiang Xu, Leopoldo Molina-Luna, Oliver Gutfleisch, Baptiste Gault, Konstantin Skokov

Direct observation of nanoscale pinning centers in Ce(Co0.8Cu0.2)5.4 permanent magnets
Permanent magnets containing rare earth elements are essential components for the electrification of society. Ce(Co1-xCux)5 permanent magnets are a model system known for their substantial coercivity, yet the underlying mechanism remains unclear. Here, we investigate Ce(Co0.8Cu0.2)5.4 magnets with a coercivity of ~1 T. Using transmission electron microscopy (TEM) and atom probe tomography (APT), we identify a nanoscale cellular structure formed by spinodal decomposition. Cu-poor cylindrical cel…

Altermagnetism revealed by polarized neutrons in MnF$_2$
Quentin Faure, Dalila Bounoua, Victor Bal\'edent, Arsen Gukasov, V. Ovidiu Garlea, Afonso Ribeiro, Jeffrey G. Rau, Sylvain Petit, Paul McClarty
https://arxiv.org/abs/2509.07087

Altermagnetism revealed by polarized neutrons in MnF$_2$
Motivated by possible spintronics applications in antiferromagnets, it was recently observed that symmetry admits magnets that combine attractive features of both ferromagnets and antiferromagnets. These systems, dubbed altermagnets, have been the subject of intense study with direct spectroscopic evidence, from ARPES and RIXS, techniques reported in a handful of materials in the last year. Inelastic neutron scattering (INS) is one of the most powerful direct probes of magnetism and has recentl…

Uncovering domain morphology in an unconventional magnet with scanning diamond quantum magnetometry
Freya Johnson (Cavendish Laboratory, University of Cambridge), Jan Zemen (Faculty of Electrical Engineering, Czech Technical University in Prague), Helena Knowles (Cavendish Laboratory, University of Cambridge), Lesley F. Cohen (Department of Physics, Blackett Laboratory, Imperial College London)

Uncovering domain morphology in an unconventional magnet with scanning diamond quantum magnetometry
Unconventional magnetic materials including non-collinear antiferromagnets, p-wave magnets and altermagnets, are an emerging frontier for quantum spintronics and hybrid quantum devices. Critical to the application of these materials is control over the magnetic domain state, as their unique, symmetry-driven properties vanish in a multi-domain limit. However, the mechanisms governing domain formation in materials with compensated local moments remain poorly understood. In this work, we examine t…

Magneto-optical Kerr-effect measurements under pulsed magnetic fields over 40 T using a compact sample fixture
Atsutoshi Ikeda, Sota Nakamura, Soichiro Yamane, Kosuke Noda, Akihiko Ikeda, Shingo Yonezawa
https://arxiv.org/abs/2509.07383

Magneto-optical Kerr-effect measurements under pulsed magnetic fields over 40 T using a compact sample fixture
Magnetic field is one of the most fundamental control parameters in materials science. Pulsed magnetic-field apparatus can generate high magnetic fields that are inaccessible by conventional DC-field magnets. One important issue is that measurement techniques compatible with pulsed fields are rather limited due to short pulse duration and large electromagnetic or mechanical noises originating from field pulses. Magneto-optical Kerr effect (MOKE), change in states of light polarization upon refl…

Crosslisted article(s) found for nlin.PS. https://arxiv.org/list/nlin.PS/new
[1/1]:
- Dirac monopole magnets in non-Hermitian systems
Haiyang Yu, Tao Jiang, Li-Chen Zhao

Magnetic measurements of Fermilab rapid-cycling Booster gradient magnets
J. DiMarco, D. Assell, T. Cummings, D. Johnson, V. Kashikhin, M. Kifarkis, J. Kuharik, J. Larson, M. Mubarak, S. Poopathi, K. Triplett
https://arxiv.org/abs/2509.13465

Magnetic measurements of Fermilab rapid-cycling Booster gradient magnets
Fermilab is upgrading its Booster synchrotron to increase ramp rate and intensity. This is part of the Proton Improvement Plan (PIP-II) that will allow the Main Injector to achieve proton beam power of 1.2 MW within the next few years. This upgrade includes running the 55-year-old Booster magnets at 20 Hz instead of the usual 15 Hz, and construction of some shorter and wider aperture versions of these combined-function gradient magnets. Magnetic measurements were performed to characterize the p…

AMaRaNTA: Automated First-Principles Exchange Parameters In 2D Magnets
Federico Orlando (Physics Department - Politecnico di Milano, Milan, Italy, Consiglio Nazionale delle Ricerche CNR-SPIN, c/o Universit\`a degli Studi "G. D'Annunzio", Chieti, Italy), Andrea Droghetti (Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Venice, Italy, Consiglio Nazionale delle Ricerche CNR-SPIN, c/o Universit\`a degli Studi "G. D'Annunzio&quo…

AMaRaNTA: Automated First-Principles Exchange Parameters In 2D Magnets
Two-dimensional (2D) magnets host a wide range of exotic magnetic textures, whose low-energy excitations and finite-temperature properties are typically described by effective spin models based on Heisenberg-like Hamiltonians. A key challenge in this framework is the reliable determination, from ab initio calculations, of exchange parameters and their anisotropic components, crucial for stabilising long-range order. Among the different strategies proposed for this task, the energy-mapping metho…

Tunneling magnetoresistance in a junction made of $X$-wave magnets with $X=p,d,f,g,i$
Motohiko Ezawa
https://arxiv.org/abs/2509.16867 https://arxiv.org/pdf…

Tunneling magnetoresistance in a junction made of $X$-wave magnets with $X=p,d,f,g,i$
We investigate the tunneling magnetoresistance (TMR) of a bilayer system made of $X$-wave magnets with $X=p,d,f,g,i$, where $X=d,g,i$ corresponds to altermagnets. A universal analytic formula is derived for the TMR ratio. It is proportional to $\left\vert J\right\vert /\left( N_{X}Γ\right) $ for small $Γ$, where $N_{X}$ is the number of the nodes of the $X$% -wave magnet, $J$ is the strength of the $X$-wave magnet, and $Γ$ is the self-energy. It is contrasted with the TMR ratio made of ferro…

Very-low-field MRI scanners: from the ideal to the real permanent magnet array
Umberto Zanovello, Alessandro Arduino, Vittorio Basso, Luca Zilberti, Alessandro Sola, Andrea Agosto, Luca Toso, Oriano Bottauscio
https://arxiv.org/abs/2509.11762

Very-low-field MRI scanners: from the ideal to the real permanent magnet array
Very-low-field MRIs are becoming increasingly popular due to their portability and adaptability to different environments. They are being successfully used for various clinical applications, leading to a paradigm shift in the way imaging care is typically performed. The development of low-cost MRI scanner prototypes began a few years ago, with some interesting and promising open-source projects emerging in both hardware and software design. Using permanent magnets (PMs) to generate the static m…

Bilayer Cuprate Antiferromagnets Enable Programmable Cavity Optomagnonics
Tahereh Sadat Parvini
https://arxiv.org/abs/2509.17173 https://arxiv.org/pdf/2509…

Bilayer Cuprate Antiferromagnets Enable Programmable Cavity Optomagnonics
Hybrid platforms that couple microwave photons to collective spin excitations offer promising routes for coherent information processing, yet conventional magnets face inherent trade-offs among coupling strength, coherence, and tunability. We demonstrate that bilayer cuprate antiferromagnets, exemplified by YBa2Cu3O6+x, provide an alternative approach enabled by their unique magnon spectrum. Using a neutron-constrained bilayer spin model, we obtain the complete Gamma-point spectrum and identify…

Crosslisted article(s) found for cond-mat.quant-gas. https://arxiv.org/list/cond-mat.quant-gas/new
[1/1]:
- Dirac monopole magnets in non-Hermitian systems
Haiyang Yu, Tao Jiang, Li-Chen Zhao

Antitoroidal magnets and anomalous Hall effect
Vladimir A. Zyuzin
https://arxiv.org/abs/2509.22266 https://arxiv.org/pdf/2509.22266

Antitoroidal magnets and anomalous Hall effect
In this paper we introduce a theoretical model of a metallic magnetic system with an antitoroidal order. We introduce a mechanism of indirect interaction of conducting fermions with localized spins based on the tunneling processes of conducting fermions through the localized spins. We demonstrate that interaction of conducting fermions with an antitoroidal order results in odd in momentum spin-momentum locking. The interaction resembles Rashba spin-orbit coupling but breaks the time-reversal sy…

Chiral quantum magnets with optically and catalytically active spin ladders
Bum Chul Park, Sung-Chul Kim, Dae Beom Lee, Young Kwang Kim, Bomin Kim, Sonny H. Rhim, Eunsoo Lee, Yongju Hong, Kwangyeol Lee, Sang Hyun Lee, Jessica Ma, Michal Sawczyk, Jun Lu, Jason Manassa, Nishkarsh Agarwal, Robert Hovden, Sung Ok Won, Min Jun Ko, Minkyu Park, Jiung Cho, Xiaoming Mao, Kai Sun, Young Keun Kim, Nicholas A. Kotov

Chiral quantum magnets with optically and catalytically active spin ladders
Chiral quantum magnets with spin-states separated by a large energy gap are technologically attractive but difficult to realize. Geometrically frustrated topological states with nanoscale chirality may offer a chemical pathway to such materials. However, room temperature spin misalignment, weakness of Dzyaloshinskii-Moriya interactions, and high energy requirements for lattice distortions set high physicochemical barriers for their realization. Here, we show that layered iron oxyhydroxides (LIO…

Controlling an altermagnetic spin density wave in the kagome magnet CsCr3Sb5
Zihao Huang, Chenchao Xu, Yande Que, Yi Liu, Ranjith Shivajirao, Zheng Jue Tong, Amit Kumar, Chao Cao, Guang-Han Cao, Hong-Jun Gao, Bent Weber
https://arxiv.org/abs/2510.05018

Controlling an altermagnetic spin density wave in the kagome magnet CsCr3Sb5
The interplay of charge and spin orders lies at the heart of correlated electron physics and plays a critical role in the emergence of unconventional quantum phases. Kagome magnets provide a particularly promising platform to investigate these phenomena, owing to their geometrically frustrated lattice structure. However, resolving spin and charge orders microscopically and establishing ways to control them remain fundamental challenges. Here, we demonstrate magnetic field control of an altermag…

Intrinsic Linear Response from Zeeman Quantum Geometry in 2D Unconventional Magnets
Neelanjan Chakraborti, Sudeep Kumar Ghosh, Snehasish Nandy
https://arxiv.org/abs/2508.14745 h…

Intrinsic Linear Response from Zeeman Quantum Geometry in 2D Unconventional Magnets
Unconventional magnets with zero net magnetization yet momentum-dependent spin splitting constitute a newly identified class of materials that provide a rich platform for quantum-geometry-driven transport phenomena. Exploiting the interplay between momentum translation and spin rotation, we uncover a distinct linear transport response governed by a generalized quantum geometric tensor, the Zeeman quantum geometric tensor (ZQGT). We show that the ZQGT drives a linear intrinsic gyrotropic magneti…

More bridging ligands activate direct exchange: the case of anisotropic Kitaev effective magnetic interactions
Pritam Bhattacharyya, Nikolay A. Bogdanov, Liviu Hozoi
https://arxiv.org/abs/2510.04149

More bridging ligands activate direct exchange: the case of anisotropic Kitaev effective magnetic interactions
A magnet is a collection of magnetic moments. How those interact is determined by what lies in between. In transition-metal and rare-earth magnetic compounds, the configuration of the ligands around each magnetic center and the connectivity of the ligand cages are therefore pivotal -- for example, the mutual interaction of magnetic species connected through one single ligand is qualitatively different from the case of two bridging anions. Two bridging ligands are encountered in Kitaev magnets. …

Nature of magnetic exchange interactions in kagome antiferromagnets FeGe and FeSn
Yitao Zheng, Yan Zhu, Jun Hu
https://arxiv.org/abs/2509.04228 https://arx…

Nature of magnetic exchange interactions in kagome antiferromagnets FeGe and FeSn
Magnetic exchange interactions (MEIs) in kagome magnets exhibit rich features due to the interplay of charge, spin, orbital and lattice degrees of freedom, giving rise to a variety of exotic quantum states. Through first-principles calculations, we systematically investigate the MEIs in kagome antiferromagnets FeGe and FeSn. While the antiferromagnetic order originates from the interlayer coupling between neighboring kagome layers, Fe atoms within each kagome layer couple ferromagnetically, dri…

Unnecessary quantum criticality in $SU(3)$ kagome magnets
Yunchao Zhang, Xue-Yang Song, T. Senthil
https://arxiv.org/abs/2508.16725 https://arxiv.org/pdf/2…

Unnecessary quantum criticality in $SU(3)$ kagome magnets
Algebraic/Dirac spin liquids (DSLs) are a class of critical quantum ground states that do not have a quasi-particle description. DSLs and related spin liquid phases often arise in strongly frustrated quantum spin systems, in which strong correlations and quantum fluctuations among constituent spins persist down to zero temperature. In this work, we analyze Mott insulating phases of $SU(3)$ fermions on a kagome lattice which may realize a DSL phase, described at low energies by $(2 + 1)d$ quantu…

Long lifetimes of nanoscale skyrmions in lithium-decorated van der Waals ferromagnet Fe$_3$GeTe$_2$
Soumyajyoti Haldar, Moritz A. Goerzen, Stefan Heinze, Dongzhe Li
https://arxiv.org/abs/2508.18522

Long lifetimes of nanoscale skyrmions in lithium-decorated van der Waals ferromagnet Fe$_3$GeTe$_2$
The Dzyaloshinskii-Moriya interaction (DMI), which originates from spin-orbit coupling and relies on broken inversion symmetry, is recognized as a key ingredient in forming magnetic skyrmions. However, most 2D magnets exhibit inversion symmetry; therefore, the DMI is suppressed. Here, we propose a strategy to induce large DMI via lithium absorption on the surface of 2D magnets -- an experimentally feasible approach. Using first-principles and atomistic spin simulations, we predict the formation…

Three-dimensional unfrustrated and frustrated quantum Heisenberg magnets. Specific heat study
Taras Krokhmalski, Taras Hutak, Oleg Derzhko
https://arxiv.org/abs/2508.17016 https…

Three-dimensional unfrustrated and frustrated quantum Heisenberg magnets. Specific heat study
We examine the $S=1/2$ Heisenberg magnet on four three-dimensional lattices -- simple-cubic, diamond, pyrochlore, and hyperkagome ones -- for ferromagnetic and antiferromagnetic signs of the exchange interaction in order to illustrate the effect of lattice geometry on the finite-temperature thermodynamic properties with a focus on the specific heat $c(T)$. To this end, we use quantum Monte Carlo simulations or high-temperature expansion series complemented with the entropy method. We also discu…

Hunting for superconductivity in doped triangular lattice Kitaev magnets
Andrew Hardy, Ryan Levy, Arun Paramekanti
https://arxiv.org/abs/2508.16720 https://

Hunting for superconductivity in doped triangular lattice Kitaev magnets
Motivated by exploring correlated metals with frustrating bond-dependent exchange interactions, we study hole and electron doped Kitaev Mott insulators on the triangular lattice. Using homogeneous parton mean field theory, we find that the stripe antiferromagnetic (AFM) order for Kitaev coupling $K>0$ and the ferromagnetic (FM) order for $K<0$, both vanish at sufficiently large doping, beyond which we find regimes with chiral $d\pm i d$ singlet pairing and $p\pm ip$ triplet pairing respectively…

Emergence of quantum spin liquid and spin-flop phase in Kitaev antiferromagnets in a [111] magnetic field
Shuai Liu, Hao Wu, Jinbin Li, Xiaoqun Wang, Qiang Luo
https://arxiv.org/abs/2509.04141

Emergence of quantum spin liquid and spin-flop phase in Kitaev antiferromagnets in a [111] magnetic field
Kitaev magnets have emerged as pivotal systems for investigating frustrated magnetism, providing a unique platform to explore quantum phases governed by the interplay between bond-dependent anisotropy and external magnetic fields. However, the quantum phase diagrams, particularly near the dominant antiferromagnetic Kitaev regime, remain puzzling despite extensive studies. In this work, we perform unbiased exact diagonalization calculations of the Kitaev-$Γ$ model in a [111] magnetic field on a…

Skyrmion-Antiskyrmion Lattice: A Net-Zero Topological Phase in Low-Symmetry Frustrated Chiral Magnets
Sayan Banik, Ashis K. Nandy
https://arxiv.org/abs/2509.14207 https://

Skyrmion-Antiskyrmion Lattice: A Net-Zero Topological Phase in Low-Symmetry Frustrated Chiral Magnets
We report the discovery of a thermodynamically stable skyrmion-antiskyrmion lattice in two-dimensional heterostructures, a novel state exhibiting a net-zero global topological charge owing to an equal population of skyrmions and antiskyrmions. This surprising coexistence of oppositely charged solitons remarkably circumvents their anticipated annihilation. We demonstrate the formation and evolution of this phase in Fe films on C1v -symmetric (110) surfaces of GaAs and CdTe semiconductors. Specif…

Ferromagnetism vs. Antiferromagnetism in Narrow-Band Systems: Competition Between Quantum Geometry and Band Dispersion
Haoyu Hu, Oskar Vafek, Kristjan Haule, B. Andrei Bernevig
https://arxiv.org/abs/2509.03575

Ferromagnetism vs. Antiferromagnetism in Narrow-Band Systems: Competition Between Quantum Geometry and Band Dispersion
Magnetism in narrow-band systems arises from the interplay between electronic correlations, quantum geometry, and band dispersion. In particular, both ferro and anti-ferro magnets are known to occur as ground states of (different) models featuring narrow bands. This poses the question of which is favored and under what conditions. In this work, we present a unified theoretical framework to investigate spin physics within narrow bands. By deriving an effective spin model, we show that the non-at…

Interfacial Control of both Magnetism and Polarization in a van der Waals Ferromagnet/Ferroelectric Heterostructure
Priyanshu Raj, Sourav Mal, Rana Saha, Prasenjit Sen
https://arxiv.org/abs/2509.01992 …

Interfacial Control of both Magnetism and Polarization in a van der Waals Ferromagnet/Ferroelectric Heterostructure
Two-dimensional multiferroic van der Waals heterostructures provide a promising platform for the simultaneous control of distinct ferroic orders, with potential applications in magnetoelectric devices and spintronics. The practical implementation of such technologies requires 2D magnets with high Curie temperatures and strong perpendicular magnetic anisotropy (PMA). Here, based on first-principles calculations, we propose a multiferroic heterostructure composed of the room-temperature ferromagn…

Semi-Dirac spin liquids and frustrated quantum magnetism on the trellis lattice
Sourin Chatterjee, Atanu Maity, Janik Potten, Tobias M\"uller, Andreas Feuerpfeil, Ronny Thomale, Karlo Penc, Harald O. Jeschke, Rhine Samajdar, Yasir Iqbal
https://arxiv.org/abs/2509.02663

Semi-Dirac spin liquids and frustrated quantum magnetism on the trellis lattice
Geometrical frustration in quantum magnets provides a fertile setting for unconventional phases of matter, including quantum spin liquids (QSLs). The trellis lattice, with its complex site arrangements and edge-sharing triangular motifs, presents a promising platform for such physics. In this work, we undertake a comprehensive classification of all fully symmetric QSLs on the trellis lattice using the projective symmetry group approach within the Abrikosov fermion representation. We find 7 U(1)…

Persistent Interfacial Topological Hall Effect Demonstrating Electrical Readout of Topological Spin Structures in Insulators
Jing Li, Huilin Lai, Andrew H. Comstock, Aeron McConnell, Bharat Giri, Yu Yun, Tianhao Zhao, Xiao Wang, Yongseong Choi, Xuemei Cheng, Jian Shen, Zhigang Jiang, Dali Sun, Wenbin Wang, Xiaoshan Xu
https://arxiv.org/abs…

Persistent Interfacial Topological Hall Effect Demonstrating Electrical Readout of Topological Spin Structures in Insulators
Conventional topological Hall effects (THE) require conducting magnets, leaving insulating systems largely inaccessible. Here we introduce the interfacial topological Hall effect (ITHE), where the noncoplanar spin textures of insulating magnets are imprinted onto an adjacent heavy metal via the magnetic proximity effect (MPE) and detected electrically. In Pt/h-LuFeO3 bilayers, h-LuFeO3 hosts a topological spin structure robust against high magnetic fields, arising from a 120° triangular spin l…

Fabrication of the HFVMTF Double-Bath Cryostat
R Bruce (Fermi National Accelerator Laboratory), V Nikolic (Fermi National Accelerator Laboratory), T Tope (Fermi National Accelerator Laboratory), O Oshinowo (Fermi National Accelerator Laboratory), G Velev (Fermi National Accelerator Laboratory), T Vo (Ability Engineering Technology Inc), M Maurisak (Ability Engineering Technology Inc)
…

Fabrication of the HFVMTF Double-Bath Cryostat
The High Field Vertical Magnet Test Facility (HFVMTF) at Fermilab is designed to test superconducting magnets up to 20 tons and 1.3 meters in diameter. Central to the facility is a double-bath superfluid helium cryostat reaching 1.8 K at 1.2 bar. Integrated with a 15 T superconducting dipole from LBNL, HFVMTF supports HTS cable testing for fusion applications. This paper presents the design and fabrication of the cryostat, with a focus on two complex components: the 2 K heat exchanger and the l…

Ab initio study of magnetoresistance effect in $\mathrm{Mn_{3}Sn}/\mathrm{MgO}/\mathrm{Mn_{3}Sn}$ antiferromagnetic tunnel junction
Katsuhiro Tanaka, Yuta Toga, Susumu Minami, Satoru Nakatsuji, Takuya Nomoto, Takashi Koretsune, Ryotaro Arita
https://arxiv.org/abs/2509.21877

Ab initio study of magnetoresistance effect in $\mathrm{Mn_{3}Sn}/\mathrm{MgO}/\mathrm{Mn_{3}Sn}$ antiferromagnetic tunnel junction
The antiferromagnets with the time-reversal symmetry broken magnetic structures possess a finite spin splitting in the momentum space, and may contribute to a realization of a finite tunnel magnetoresistance (TMR) effect even with magnets with zero net spin polarization. In this paper, we study the TMR effect with the noncollinear antiferromagnet $\mathrm{Mn_{3}Sn}$ whose inverse $120^{\circ}$ antiferromagnetic order breaks the time-reversal symmetry. In particular, we employ the representative…

Low-dimensional Heisenberg magnets: Riemann zeta function regularization
V. Yu. Irkhin
https://arxiv.org/abs/2509.13977 https://arxiv.org/pdf/2509.13977

Low-dimensional Heisenberg magnets: Riemann zeta function regularization
The Riemann zeta function regularization is employed to extract finite temperature corrections to effective magnetic moment $S^*$ of one- and two-dimensional Heisenberg ferro- and antiferromagnets. Whereas for the one-dimensional ferromagnet we obtain the usual $T^{1/2}$ spin-wave dependence, for the antiferromagnetic chain the dependence is described by a generalized incomplete Riemann function. The quantity $S^*$ determines strong short-range magnetic order in the absence of long-range order,…

The diffusion-driven orthorhombic to tetragonal transition in YBa$_2$Cu$_3$O$_7$ derived with a machine learning interatomic potential
Davide Gambino, Niccol\`o Di Eugenio, Jesper Byggm\"astar, Johan Klarbring, Daniele Torsello, Flyura Djurabekova, Francesco Laviano
https://arxiv.org/abs/2509.26095

The diffusion-driven orthorhombic to tetragonal transition in YBa$_2$Cu$_3$O$_7$ derived with a machine learning interatomic potential
Defects in high temperature superconductors such as YBa$_2$Cu$_3$O$_7$ (YBCO) critically influence their superconducting behavior, as they substantially degrade or even suppress superconductivity. With the renewed interest in cuprates for next-generation superconducting magnets operating in radiation-harsh environments such as fusion reactors and particle accelerators, accurate atomistic modeling of defects and their dynamics has become essential. Here, we present a general-purpose machine-lear…

Challenges and opportunities in proximity-driven exciton-spin engineering in van der Waals heterostructures
Mushir Thodika, Dimitar Pashov, Igor Zutic, Mark van Schilfgaarde, Swagata Acharya
https://arxiv.org/abs/2509.21956

Challenges and opportunities in proximity-driven exciton-spin engineering in van der Waals heterostructures
van der Waals heterostructures consisting of transition metal dichalcogenides (TMDs) and two-dimensional (2D) magnets offer a versatile platform to study the coexistence and transformation of different excitons. By focusing on TMD WSe$_2$ and 2D magnetic CrI$_3$, as a bilayer WSe$_2$/CrI$_3$ and a trilayer CrI$_3$/WSe$_2$/CrI$_3$, we provide their description using a parameter-free, high-fidelity many-body perturbation theory. This ab initio approach allows us to elucidate the character of magn…

Noncollinear Magnetic Multipoles in Collinear Altermagnets
Luca Buiarelli, Rafael M. Fernandes, Turan Birol
https://arxiv.org/abs/2509.23117 https://arxiv.…

Noncollinear Magnetic Multipoles in Collinear Altermagnets
Altermagnets host an array of magnetic multipoles, which are often visualized and studied in the reciprocal space. In the real space, the relative phase of the multipoles of the spin-density around atoms determines whether a system is an altermagnet or a conventional antiferromagnet. In this study, we approach these real space multipoles in altermagnets using a combination of first principles calculations and group theory. We show that even in collinear magnets, the local spin density is necess…

Simulation Study of Energy Chirp Induced Effects in Laser Wakefield Accelerator Driven Free Electron Laser
Shan-You Teng, Wai-Keung Lau, Shih-Hung Chen, Wei-Yuan Chiang
https://arxiv.org/abs/2508.11852

Simulation Study of Energy Chirp Induced Effects in Laser Wakefield Accelerator Driven Free Electron Laser
Beam energy compression via chicane magnets has been proved to be an effective method to reduce the slice energy spread of electron beams generated by laser wakefield accelerators (LWFAs). This technique has been widely adopted by leading research teams in experiments targeting future compact, high-gain free electron lasers (FELs). However, after energy compression, a strong beam energy chirp is introduced into the electron beam, which substantially hinders the microbunching process and impairs…

Splitting of electronic spectrum in paramagnetic phase of itinerant ferromagnets and altermagnets
A. A. Katanin
https://arxiv.org/abs/2509.23396 https://ar…

Splitting of electronic spectrum in paramagnetic phase of itinerant ferromagnets and altermagnets
We study self-energy effects, induced by strong magnetic fluctuations in paramagnetic phase of strongly-correlated itinerant magnets within the density functional theory combined with the dynamical mean field theory (DFT+DMFT approach) and its non-local extension. As concrete examples, we consider $α$-iron, half metal CrO$_2$, van der Waals material CrTe$_2$, and altermagnet CrSb. We show that both local and non-local magnetic correlations yield splitting of the electronic spectrum in the para…

Light-induced odd-parity altermagnets on dimerized lattices
Dongling Liu, Zheng-Yang Zhuang, Di Zhu, Zhigang Wu, Zhongbo Yan
https://arxiv.org/abs/2508.18360 https://

Light-induced odd-parity altermagnets on dimerized lattices
Altermagnets are an emerging class of collinear magnets with momentum-dependent spin splitting and zero net magnetization. These materials can be broadly classified into two categories based on the behavior of spin splitting at time-reversal-related momenta: even-parity and odd-parity altermagnets. While even-parity altermagnets have been thoroughly investigated both theoretically and experimentally, the systems capable of hosting odd-parity altermagnetism remain largely unexplored. In this wor…

Large Anomalous and Topological Hall Effect and Nernst Effect in a Dirac Kagome Magnet Fe3Ge
Chunqiang Xu, Shuvankar Gupta, Hengxin Tan, Hyeonhu Bae, Olajumoke Oluwatobiloba Emmanuel, Mingyu Xu, Yan Wu, Xiaofeng Xu, Pengpeng Zhang, Weiwei Xie, Binghai Yan, Xianglin Ke
https://arxiv.org/abs/2509.18590…

Test results of the LQXFA/B02 and LQXFA/B03 cryo-assemblies for the High Luminosity LHC upgrade
G. Chlachidze, G. Ambrosio, M. Anerella, G. Apollinari, M. Baldini, J. DiMarco, S. Feher, P. Ferracin, V. Nikolic, F. Nobrega, C. Orozco, D. Orris, S. Prestemon, R. Rabehl, S. Stoynev, A. Vouris
https://arxiv.org/abs/2509.14369

Test results of the LQXFA/B02 and LQXFA/B03 cryo-assemblies for the High Luminosity LHC upgrade
The US High-Luminosity LHC Accelerator Upgrade Project (AUP) is responsible for delivering cryo-assemblies for the Q1/Q3 quadrupole optical components of the High Luminosity LHC upgrade at CERN. Total of 10 cryo-assemblies containing two Nb3Sn quadrupole magnets per cold mass will be delivered within this program. After the successful test of the first pre-series cryo-assembly in 2023, two more cryo-assemblies were tested at Fermilab's horizontal test facility. Production overview and the test …

A new skyrmion topological transition driven by higher-order exchange interactions in Janus MnSeTe
Megha Arya, Moritz A. Goerzen, Lionel Calmels, R\'emi Arras, Soumyajyoti Haldar, Stefan Heinze, Dongzhe Li
https://arxiv.org/abs/2509.10661

A new skyrmion topological transition driven by higher-order exchange interactions in Janus MnSeTe
Two-dimensional (2D) van der Waals magnets offer a promising platform for pushing skyrmion technology to the single-layer limit with high tunability. While Dzyaloshinskii-Moriya interaction (DMI) is often recognized as central to skyrmion formation, their stability, collapse, and topological transition in 2D materials remain largely unexplored. In particular, the effect of higher-order exchange interactions (HOI) on these phenomena is unknown. Here, using first-principles calculations and atomi…

Magnetic order tuning of excitons in the magnetic semiconductor CrCl$_3$ through strain
Ali Ebrahimian, Francisco J. Garc\'ia-Vidal, Juan J. Palacios
https://arxiv.org/abs/2509.20761

Magnetic order tuning of excitons in the magnetic semiconductor CrCl$_3$ through strain
Magnon-exciton coupling provides an unprecedented opportunity for the optical tunability of spin information and, viceversa, for the magnetic control of the optical response. Few-layered magnets are an ideal platform for the experimental study of this coupling, in part due to the strong excitonic character of the optical response in (quasi-)two dimensions. Here, we demonstrate a strong dependence of the excitonic oscillator strength on the magnetic order in a monolayer of chromium trichloride C…

Acceleration of Multi-Scale LTS Magnet Simulations with Neural Network Surrogate Models
Louis Denis, Julien Dular, Vincent Nuttens, Mariusz Wozniak, Beno\^it Vanderheyden, Christophe Geuzaine
https://arxiv.org/abs/2509.12030

Acceleration of Multi-Scale LTS Magnet Simulations with Neural Network Surrogate Models
While the prediction of AC losses during transients is critical for designing large-scale low-temperature superconducting (LTS) magnets, brute-force finite-element (FE) simulation of their detailed geometry down to the length scale of the conductors is a computational challenge. Multi-scale methods, balancing between a coarse approximation of the fields at the scale of the magnet and a detailed description at the scale of the conductors, are promising approaches to reduce the computational load…

Hole doping as an efficient route to increase the Curie temperature in monolayer CrI$_3$
Marko Orozovi\'c, Bo\v{z}idar N. \v{S}o\v{s}ki\'c, Silvia Picozzi, \v{Z}eljko \v{S}ljivan\v{c}anin, Srdjan Stavri\'c
https://arxiv.org/abs/2508.11397

Hole doping as an efficient route to increase the Curie temperature in monolayer CrI$_3$
Two-dimensional van der Waals (vdW) magnets offer unprecedented opportunities to control magnetism at the atomic scale. Through charge carrier doping - realized by electrostatic gating, intercalation/adsorption, or interfacial charge transfer - one can efficiently tune exchange interactions and spin-orbit-induced effects in these systems. In this work, through a multi-scale theoretical framework combining density functional theory, spin Hamiltonian modeling, and Wannier-function analysis, we ch…

Realization of large magnetocaloric effect in the Kagome antiferromagnet Gd3BWO9 for Sub-Kelvin cryogenic refrigeration
Fangyuan Song, Xinyang Liu, Chao Dong, Jin Zhou, Xinlong Shi, Yuyan Han, Langsheng Ling, Huifen Ren, Songliu Yuan, Shun Wang, Junsen Xiang, Peijie Sun, Zhaoming Tian
https://arxiv.org/abs/2509.11300

Realization of large magnetocaloric effect in the Kagome antiferromagnet Gd3BWO9 for Sub-Kelvin cryogenic refrigeration
Rare-earth (RE) based frustrated magnets have attracted great attention as excellent candidates for magnetic refrigeration at sub-Kelvin temperatures, while the experimental identification on systems exhibiting both large volumetric cooling capacity and reduced working temperatures far below 1 K remain to be a challenge. Here, through the ultra-low temperature magnetism and thermodynamic characterizations, we unveil the large magnetocaloric effect (MCE) realized at sub-Kelvin temperatures in th…

High-field NMR study of field-induced states in Pb(TiO)Cu$_4$(PO$_4$)$_4$
Y. Ihara, T. Kanda, Y. Kato, Y. Motome, K. Matsui, K. Kindo, Y. Kohama, T. Kimura, K. Kimura
https://arxiv.org/abs/2508.12759

High-field NMR study of field-induced states in Pb(TiO)Cu$_4$(PO$_4$)$_4$
The square cupola antiferromagnet Pb(TiO)Cu$_4$(PO$_4$)$_4$ exhibits the intriguing magnetoelectric responses arising from the consecutive change in the magnetic quadrupolar-type configuration of magnetic moments under external magnetic fields higher than 15 T. To clarify the high-field magnetic structures in Pb(TiO)Cu$_4$(PO$_4$)$_4$, an NMR measurement was performed in pulsed fields up to 32.2 T significantly extending the field range accessible by superconducting magnets. The double-peak str…

Tuning the Magnetic Anisotropy Energy of MoS$_2$-supported Mn$_{12}$ complexes by Electric Field: A First-Principles Study
Shuanglong Liu, Adam V. Bruce, Dmitry Skachkov, James N. Fry, Hai-Ping Cheng
https://arxiv.org/abs/2509.12020

Tuning the Magnetic Anisotropy Energy of MoS$_2$-supported Mn$_{12}$ complexes by Electric Field: A First-Principles Study
In this work, we examine low-energy adsorption configurations of four dodecanuclear manganese single-molecule magnets [Mn$_{12}$O$_{12}$(O$_2$CR)$_{16}$(H$_2$O)$_4$] (Mn$_{12}$), where the ligand R being H, CH$_3$, CHCl$_2$ or C$_6$H$_5$, on a molybdenum disulfide (MoS$_2$) monolayer using force field and density functional theory calculations. The van der Waals interaction is shown to be crucial for determining the adsorption energy. Some electrons transfer from the substrate to the molecules …