Tootfinder

Some thoughtful stuff about passkeys and the identity system, includes a few angles I hadn’t thought of: #identity

Passkeys and Modern Authentication
Some thoughts in support of simple solutions.

🌸 Give a bun a break 🌸

coming to grips (or not) with the end of the long weekend with a nice soundboard of peter rowan, tony rice, & vassar clements at a house party in 1998. https://gdarchive.net/Bluegrass/Artists…

the beatings will continue until morale improves

the beatings will continue until morale improves

85gCO2/kWh National Grid CO2 intensity is LOW wrt last 24h so you can run your wash etc now! #green #energy

GB Grid Intensity Status - Earth Notes
Live marginal carbon intensity of the grid in Great Britain.

Ich frag mich ja manchmal ob ich der einzige bin der sich ab und zu Emissionsdaten anschaut. Wollte für ein Beispiel raussuchen, wieviel das Heizkraftwerk Potsdam-Süd an CO2 produziert. In der UBA-Datenbank ist es nicht drin. Zu klein. Die Stadtwerke haben eine Umwelterklärung von 2020 (ok, nicht aktuell) wo was drinsteht. CO2 ist aber nur für beide Heizkraftwerke (Nord Süd) kombiniert angegeben. 🧵

https://www.pennlive.com/news/2025/09/ransomware-attack-targeting-pa-attorney-general-leads-to-case-delays-takes-down-some-critical-internal-systems.html
Ransomware attack ta…

Ransomware attack targeting Pa. attorney general leads to case delays, takes down some critical internal syst
The attack has impaired many functions of the agency, as some staff and prosecutors remain unable to access archived emails, files, and more.

In the FreshRSS discussion section on GH someone suggested also including OPML files that can be easily imported by others.
I didn't even know FreshRSS has a custom OPML extension to include those configs, but that's amazing!
Added some already now! https://codeberg.org/gedankenstuecke/freshrss-fulltext-settings

Le Conseil fédéral a induit Š plusieurs reprises la population en erreur avec de fausses indications sur le choix des F-35 dont le prix explose. https://www.letemps.ch/suisse/comment-une-presentation-biaisee-des-couts-a-pousse-au-choix-du-f-35?shouldPreventPurchase=true&inAppView=3.18.1&didomiConfig.user.externalConsent.value={"purposes":{"consent":{"enabled":["audiencem-hJxaeGrR","cookies","create_ads_profile","create_content_profile","device_characteristics","geolocation_data","improve_products","market_research","measure_ad_performance","measure_content_performance","parselyne-Ya2EC4dG","select_basic_ads","select_personalized_ads","select_personalized_content","use_limited_data_to_select_content"],"disabled":[]},"legitimate_interest":{"enabled":[],"disabled":[]}},"vendors":{"consent":{"enabled":["amazon","c:aws-cloudfront","c:bannerwise-EeHwBjLT","c:chartbeat","c:cloudflare","c:echobox-GqD96L9K","c:forecast-ZRJPAUT7","c:googleana-4TXnJigR","c:hotjar","c:jsdelivr-xdD77X6w","c:jw-player","c:keycdn","c:linkedin","c:magnitein-ePEpbCQ7","c:meta-43HDmFRa","c:microsoft","c:nonli-jnWf8kqD","c:pianohybr-R3VKC2r4","c:pinterest","c:spyri-XAtBPx3i","c:tapadinc-VDTUUcKw","c:tiktok-KZAUQLZ9","c:unrulygro-nKyLqdKi","c:youtube","facebook","google","twitter",1,10,1020,1021,1028,1046,1069,108,109,11,1126,12,120,128,13,130,131,1310,132,136,137,138,142,143,154,156,16,164,202,209,21,211,23,238,24,241,243,25,253,264,28,284,290,30,301,32,36,39,4,412,422,45,469,475,493,50,519,52,559,58,61,612,617,68,684,69,73,76,77,783,790,793,80,81,811,84,85,855,898,91,92,95,965,98],"disabled":[]},"legitimate_interest":{"enabled":[],"disabled":[]}},"user_id":"36B03261-8BC8-4FB4-A026-0543FF748710","created":"2025-05-28T08:36:56.058Z","updated":"2025-08-30T09:35:31.055Z","source":{"type":"app","domain":"ch.letemps.LT"},"action":"webview"}

What if we find nothing? Bayesian analysis of the statistical information of null results in future exoplanet habitability and #biosignature surveys: https://arxiv.org/abs/2504.06779 -> interview with the first author: https://www.youtube.com/watch?v=FbnmxiTlBUo

once again thinking of the transition between im in it and blood on the leaves, kanye really says "i be speaking swaghili" then abruptly drops u into nina simone strange fruit

A Reinforcement Learning-Based Telematic Routing Protocol for the Internet of Underwater Things
Mohammadhossein Homaei, Mehran Tarif, Agustin Di Bartolo, Oscar Mogollon Gutierrez, Mar Avila
https://arxiv.org/abs/2506.00133

A Reinforcement Learning-Based Telematic Routing Protocol for the Internet of Underwater Things
The Internet of Underwater Things (IoUT) faces major challenges such as low bandwidth, high latency, mobility, and limited energy resources. Traditional routing protocols like RPL, which were designed for land-based networks, do not perform well in these underwater conditions. This paper introduces RL-RPL-UA, a new routing protocol that uses reinforcement learning to improve performance in underwater environments. Each node includes a lightweight RL agent that selects the best parent node based…

Replaced article(s) found for cs.DM. https://arxiv.org/list/cs.DM/new
[1/1]:
- The Fagnano Triangle Patrolling Problem
Konstantinos Georgiou, Somnath Kundu, Pawel Pralat

Replaced article(s) found for cond-mat.mtrl-sci. https://arxiv.org/list/cond-mat.mtrl-sci/new
[1/2]:
- Anomalous enhancement of carrier mobility by remote phonons
Chenmu Zhang, Yuanyue Liu

Brand Masters
Great Australian Pods Podcast Directory: #GreatAusPods

Why you should leave Spotify, from @… - with humour appreciated by this music nerd
https://www.…

:genderfluid_flag: Look at this adorable bunny holding the genderfluid flag! :genderfluid_flag:
#GenderFluid #Bunny #Rabbit

Kreikan poliisi paljasti laajoja väärinkäytöksiä: viljelijät huijasivat yli 22 miljoonaa euroa EU:n maataloustukia #EU

Kreikan poliisi paljasti laajoja väärinkäytöksiä: viljelijät huijasivat yli 22 miljoonaa euroa EU:n maataloustukia
Kohun keskellä on maksu- ja valvontavirasto, joka on jo ryvettynyt vastaavassa jupakassa.

@… concur

@… No no Andrew, you misunderstand:
Crime is dropping to unacceptably low levels (negating our ability to use fear to steer the narrative), and that is out of our control.
Hence, crime is indeed out of control.

The Washington Post reports: "CBS owner Paramount settles Trump lawsuit over Harris interview for $16M"
https://www.washingtonpost.com/style/media/2025/07/02/paramount-cbs-settlement-trump-harris-interview/

CBS owner Paramount settles Trump lawsuit over Harris interview for $16M
The money will go to Trump’s future presidential library, not to him directly, according to the agreement. Paramount will not apologize as part of the settlement.

🇺🇦 #NowPlaying on KEXP's #AfternoonShow
Billy Cobham:
🎵 Le Lis
#BillyCobham
https://rebirthrecordings.bandcamp.com/track/le-lis-pellegrino-remix-2

'BoJack Horseman' Creator's 'Long Story Short' Renewed for Season 2 #tv

Eu limpo tudo após o ? antes de repassar qualquer link, sendo a única exceção o caso em que após o ? vier escrito "utm_medium=activitypub" rs.

Comparative analysis of computational approaches for predicting Transthyretin transcription activators and human dopamine D1 receptor antagonists
Mariya L. Ivanova, Nicola Russo, Konstantin Nikolic
https://arxiv.org/abs/2506.01137

Comparative analysis of computational approaches for predicting Transthyretin transcription activators and human dopamine D1 receptor antagonists
The study expands the application of scikit-learn-based machine learning (ML) to the prediction of small biomolecule functionalities based on Carbon 13 isotope (13C) NMR spectroscopy data derived from Simplified Molecular Input Line Entry System (SMILES) notations. The methodology previously demonstrated by predicting dopamine D1 receptor antagonists was upgraded with addition of new molecular features derived from the PubChem database. The enhanced ML model obtained 75.8% Accuracy, 84.2% Preci…

Solving Euclidean Problems by Isotropic Initialization
Khusrav Yorov, Bolun Wang, Mikhail Skopenkov, Helmut Pottmann, Caigui Jiang
https://arxiv.org/abs/2506.01726

Solving Euclidean Problems by Isotropic Initialization
Many problems in Euclidean geometry, arising in computational design and fabrication, amount to a system of constraints, which is challenging to solve. We suggest a new general approach to the solution, which is to start with analogous problems in isotropic geometry. Isotropic geometry can be viewed as a structure-preserving simplification of Euclidean geometry. The solutions found in the isotropic case give insight and can initialize optimization algorithms to solve the original Euclidean prob…

A High-Performance Evolutionary Multiobjective Community Detection Algorithm
Guilherme O. Santos, Lucas S. Vieira, Giulio Rossetti, Carlos H. G. Ferreira, Gladston Moreira
https://arxiv.org/abs/2506.01752

A High-Performance Evolutionary Multiobjective Community Detection Algorithm
Community structure is a key feature of complex networks, underpinning a diverse range of phenomena across social, biological, and technological systems. While traditional methods, such as Louvain and Leiden, offer efficient solutions, they rely on single-objective optimization, often failing to capture the multifaceted nature of real-world networks. Multi-objective approaches address this limitation by considering multiple structural criteria simultaneously, but their high computational cost r…

Three approaches to the Howe duality between quantum general linear supergroups
Li Luo, Xirui Yu, Zhongguo Zhou
https://arxiv.org/abs/2506.01613 https://…

Three approaches to the Howe duality between quantum general linear supergroups
The Howe duality between quantum general linear supergroups was firstly established by Y. Zhang via quantum coordinate superalgebras. In this paper, we provide two other approaches to this Howe duality. One is constructed by quantum differential operators, while the other is based on the Beilinson-Lusztig-MacPherson realization of $U_q(\mathfrak{gl}_{m|n})$. Moreover, we show that these three approaches are equivalent by giving their action formulas explicitly.

«Le Conseil fédéral s’est privé, dès le départ et sans en débattre, d’une possibilité de choisir finalement un avion de combat qui Š la fois remplirait les exigences de la défense aérienne et aurait permis d’obtenir une plus-value dans l’intérêt du pays», écrivent les rapporteurs.
https://www.letemps.ch/suisse/comment-une-presentation-biaisee-des-couts-a-pousse-au-choix-du-f-35?shouldPreventPurchase=true&inAppView=3.18.1&didomiConfig.user.externalConsent.value={"purposes":{"consent":{"enabled":["audiencem-hJxaeGrR","cookies","create_ads_profile","create_content_profile","device_characteristics","geolocation_data","improve_products","market_research","measure_ad_performance","measure_content_performance","parselyne-Ya2EC4dG","select_basic_ads","select_personalized_ads","select_personalized_content","use_limited_data_to_select_content"],"disabled":[]},"legitimate_interest":{"enabled":[],"disabled":[]}},"vendors":{"consent":{"enabled":["amazon","c:aws-cloudfront","c:bannerwise-EeHwBjLT","c:chartbeat","c:cloudflare","c:echobox-GqD96L9K","c:forecast-ZRJPAUT7","c:googleana-4TXnJigR","c:hotjar","c:jsdelivr-xdD77X6w","c:jw-player","c:keycdn","c:linkedin","c:magnitein-ePEpbCQ7","c:meta-43HDmFRa","c:microsoft","c:nonli-jnWf8kqD","c:pianohybr-R3VKC2r4","c:pinterest","c:spyri-XAtBPx3i","c:tapadinc-VDTUUcKw","c:tiktok-KZAUQLZ9","c:unrulygro-nKyLqdKi","c:youtube","facebook","google","twitter",1,10,1020,1021,1028,1046,1069,108,109,11,1126,12,120,128,13,130,131,1310,132,136,137,138,142,143,154,156,16,164,202,209,21,211,23,238,24,241,243,25,253,264,28,284,290,30,301,32,36,39,4,412,422,45,469,475,493,50,519,52,559,58,61,612,617,68,684,69,73,76,77,783,790,793,80,81,811,84,85,855,898,91,92,95,965,98],"disabled":[]},"legitimate_interest":{"enabled":[],"disabled":[]}},"user_id":"36B03261-8BC8-4FB4-A026-0543FF748710","created":"2025-05-28T08:36:56.058Z","updated":"2025-08-30T09:35:31.055Z","source":{"type":"app","domain":"ch.letemps.LT"},"action":"webview"}

[2025-06-03 Tue (UTC), 9 new articles found for cs.NI Networking and Internet Architecture]
#toXiv_bot_toot

109gCO2/kWh National Grid CO2 intensity so-so wrt last 24h so don't run big appliances now if you can wait. #CO2

GB Grid Intensity Status - Earth Notes
Live marginal carbon intensity of the grid in Great Britain.

Turkulainen, kaupunki haluaa kuulla mielipiteesi Turun tulevaisuudesta #Turku #luonto

Turkulainen, kaupunki haluaa kuulla mielipiteesi Turun tulevaisuudesta
Turun avaamassa kyselyssä tiedustellaan muun muassa kaupungin suurimmista vahvuuksista ja heikkouksista. Myös syksyn kansalaispaneeli käsittelee kaupunkistrategiaa.

Getting More from Less: Transfer Learning Improves Sleep Stage Decoding Accuracy in Peripheral Wearable Devices
William G Coon, Diego Luna, Akshita Panagrahi, Matthew Reid, Mattson Ogg
https://arxiv.org/abs/2506.00730

Getting More from Less: Transfer Learning Improves Sleep Stage Decoding Accuracy in Peripheral Wearable Devices
Transfer learning, a technique commonly used in generative artificial intelligence, allows neural network models to bring prior knowledge to bear when learning a new task. This study demonstrates that transfer learning significantly enhances the accuracy of sleep-stage decoding from peripheral wearable devices by leveraging neural network models pretrained on electroencephalographic (EEG) signals. Consumer wearable technologies typically rely on peripheral physiological signals such as pulse pl…

Computing Diverse and Nice Triangulations
Waldo G\'alvez, Mayank Goswami, Arturo Merino, GiBeom Park, Meng-Tsung Tsai
https://arxiv.org/abs/2506.01323 …

Computing Diverse and Nice Triangulations
We initiate the study of computing diverse triangulations to a given polygon. Given a simple $n$-gon $P$, an integer $ k \geq 2 $, a quality measure $σ$ on the set of triangulations of $P$ and a factor $ α\geq 1 $, we formulate the Diverse and Nice Triangulations (DNT) problem that asks to compute $k$ \emph{distinct} triangulations $T_1,\dots,T_k$ of $P$ such that a) their diversity, $\sum_{i < j} d(T_i,T_j) $, is as large as possible \emph{and} b) they are nice, i.e., $σ(T_i) \leq ασ^* $ …

Catching Stray Balls: Football, fandom, and the impact on digital discourse
Mark J. Hill
https://arxiv.org/abs/2506.01642 https://arx…

Catching Stray Balls: Football, fandom, and the impact on digital discourse
This paper examines how emotional responses to football matches influence online discourse across digital spaces on Reddit. By analysing millions of posts from dozens of subreddits, it demonstrates that real-world events trigger sentiment shifts that move across communities. It shows that negative sentiment correlates with problematic language; match outcomes directly influence sentiment and posting habits; sentiment can transfer to unrelated communities; and offers insights into the content of…

Twisted associative algebras associated to vertex algebras
Shun Xu
https://arxiv.org/abs/2506.01321 https://arxiv.org/pdf/2506.01321

Twisted associative algebras associated to vertex algebras
Let $V$ be a vertex algebra and $g$ an automorphism of $V$ of order $T$. We construct a sequence of associative algebras $\tilde{A}_{g,n}(V )$ for any $n\in(1/T)\mathbb{N}$, which are not depend on the conformal structure of $V$. We show that for a vertex operator algebra, $g$-rationality, $g$-regularity, and twisted fusion rules are independent of the choice of the conformal vector.

Replaced article(s) found for cond-mat.mtrl-sci. https://arxiv.org/list/cond-mat.mtrl-sci/new
[2/2]:
- InGaN Nanopixel Arrays on Single Crystal GaN Substrate
Anand, Azad, Jenson, Ghosh, Baten, Ku, Muziol, Sadaf

Six Minutes of Med-ness (2022-08) - Ambient Mediterranean beach at dusk at Marseillan Plage. #fieldRecording #beach #Mediterranean -

Six Minutes of Med-ness (2022-08)
Ambient Mediterranean beach at dusk at Marseillan Plage. #fieldRecording #beach #Mediterranean

Look mom, no experimental data! Learning to score protein-ligand interactions from simulations
Michael Brocidiacono, James Wellnitz, Konstantin I. Popov, Alexander Tropsha
https://arxiv.org/abs/2506.00593

Look mom, no experimental data! Learning to score protein-ligand interactions from simulations
Despite recent advances in protein-ligand structure prediction, deep learning methods remain limited in their ability to accurately predict binding affinities, particularly for novel protein targets dissimilar from the training set. In contrast, physics-based binding free energy calculations offer high accuracy across chemical space but are computationally prohibitive for large-scale screening. We propose a hybrid approach that approximates the accuracy of physics-based methods by training targ…

Network Digital Twin for 6G and Beyond: An End-to-End View Across Multi-Domain Network Ecosystems
Dinh-Hieu Tran, Nazar Waheed, Yuris Mulya Saputra, Xingqin Lin, Cong T. Nguyen, Tedros Salih Abdu, Van Nhan Vo, Van-Quan Pham, Madyan Alsenwi, Abuzar Babikir Mohammad Adam, Symeon Chatzinotas, Eva Lagaunas, Hung Tran, Tu Ho Dac, Nguyen Van Huynh
https://…

Network Digital Twin for 6G and Beyond: An End-to-End View Across Multi-Domain Network Ecosystems
With the rapid development of technology, the number of smart mobile users is increasing, accompanied by growing demands from applications such as virtual/augmented reality (VR/XR), remote surgery, autonomous vehicles, and real-time holographic communications, all of which require high transmission rates and ultra-low latency in 6G and beyond networks (6G+). This poses enormous challenges in efficiently deploying large-scale networks, including network design, planning, troubleshooting, optimiz…

Unfolding Boxes with Local Constraints
Long Qian, Eric Wang, Bernardo Subercaseaux, Marijn J. H. Heule
https://arxiv.org/abs/2506.01079 https://

Unfolding Boxes with Local Constraints
We consider the problem of finding and enumerating polyominos that can be folded into multiple non-isomorphic boxes. While several computational approaches have been proposed, including SAT, randomized algorithms, and decision diagrams, none has been able to perform at scale. We argue that existing SAT encodings are hindered by the presence of global constraints (e.g., graph connectivity or acyclicity), which are generally hard to encode effectively and hard for solvers to reason about. In this…

Exploring the Non-uniqueness of Node Co-occurrence Matrices of Hypergraphs
Timothy LaRock, Renaud Lambiotte
https://arxiv.org/abs/2506.01479 https://

Exploring the Non-uniqueness of Node Co-occurrence Matrices of Hypergraphs
Hypergraphs extend traditional networks by capturing multi-way or group interactions. Given the complexity of hypergraph data and the wide range of methodology available for pairwise network analysis, hypergraph data is often projected onto a weighted and undirected network. The simplest of these projections, often referred to as a node co-occurrence matrix, is known to be non-unique, as distinct non-isomorphic hypergraphs can produce the same weighted adjacency matrix. This non-uniqueness rais…

Algorithm for computing canonical bases and foldings of quantum groups
Toshiaki Shoji, Zhiping Zhou
https://arxiv.org/abs/2506.00793 https://

Algorithm for computing canonical bases and foldings of quantum groups
Let ${\mathbf U}_q^-$ be the negative half of a quantum group of finite type. Let $P$ be the transition matrix between the canonical basis and a PBW basis of ${\mathbf U}_q^-$. In the case ${\mathbf U}_q^-$ is symmetric, Antor gave a simple algorithm of computing $P$ by making use of monomial bases. By the folding theory, ${\mathbf U}_q^-$ (symmetric, with a certain automorphism) is related to a quantum group $\underline{\mathbf U}_q^-$ of non-symmetric type. In this paper, we extend the result…

Development of an Atomic Layer Deposition System for Deposition of Alumina as a Hydrogen Permeation Barrier
Zachary R. Robinson, Jeffrey Woodward, Alexander C. Kozen, Joshua Ruby, Tyler Liao, Luke Herter, Rashad Ahmadov, Mark D. Wittman, Matthew Sharpe
https://arxiv.org/abs/2507.00958

Development of an Atomic Layer Deposition System for Deposition of Alumina as a Hydrogen Permeation Barrier
Tritium permeation into and through materials poses a critical challenge for the development of nuclear fusion reactors. Minimizing tritium permeation is essential for the safe and efficient use of available fuel supplies. In this work, we present the design, construction, and validation of custom atomic layer deposition (ALD) and deuterium permeation measurement systems aimed at developing thin-film hydrogen permeation barriers. Using the ALD system, we deposited conformal Al2O3 films on coppe…

116gCO2/kWh National Grid CO2 intensity is HIGH wrt last 24h so don't run anything that can wait! #CO2

GB Grid Intensity Status - Earth Notes
Live marginal carbon intensity of the grid in Great Britain.

Enhancing Drug Discovery: Autoencoder-Based Latent Space Augmentation for Improved Molecular Solubility Prediction using LatMixSol
Mohammad Saleh Hasankhani
https://arxiv.org/abs/2506.00223

Enhancing Drug Discovery: Autoencoder-Based Latent Space Augmentation for Improved Molecular Solubility Prediction using LatMixSol
Accurate prediction of molecular solubility is a cornerstone of early-stage drug discovery, yet conventional machine learning models face significant challenges due to limited labeled data and the high-dimensional nature of molecular descriptors. To address these issues, we propose LatMixSol, a novel latent space augmentation framework that combines autoencoder-based feature compression with guided interpolation to enrich training data. Our approach first encodes molecular descriptors into a lo…

Bridging Subjective and Objective QoE: Operator-Level Aggregation Using LLM-Based Comment Analysis and Network MOS Comparison
Parsa Hassani Shariat Panahi, Amir Hossein Jalilvand, M. Hasan Najafi
https://arxiv.org/abs/2506.00924

Bridging Subjective and Objective QoE: Operator-Level Aggregation Using LLM-Based Comment Analysis and Network MOS Comparison
This paper introduces a dual-layer framework for network operator-side quality of experience (QoE) assessment that integrates both objective network modeling and subjective user perception extracted from live-streaming platforms. On the objective side, we develop a machine learning model trained on mean opinion scores (MOS) computed via the ITU-T P.1203 reference implementation, allowing accurate prediction of user-perceived video quality using only network parameters such as packet loss, delay…

Minimum Membership Geometric Set Cover in the Continuous Setting
Sathish Govindarajan, Mayuresh Patle, Siddhartha Sarkar
https://arxiv.org/abs/2506.00272 h…

Minimum Membership Geometric Set Cover in the Continuous Setting
We study the minimum membership geometric set cover, i.e., MMGSC problem [SoCG, 2023] in the continuous setting. In this problem, the input consists of a set $P$ of $n$ points in $\mathbb{R}^{2}$, and a geometric object $t$, the goal is to find a set $\mathcal{S}$ of translated copies of the geometric object $t$ that covers all the points in $P$ while minimizing $\mathsf{memb}(P, \mathcal{S})$, where $\mathsf{memb}(P, \mathcal{S})=\max_{p\in P}|\{s\in \mathcal{S}: p\in s\}|$. For un…

[2025-06-03 Tue (UTC), 3 new articles found for cs.SI Social and Information Networks]
#toXiv_bot_toot

What is a double star-product?
Nikita Safonkin
https://arxiv.org/abs/2506.00699 https://arxiv.org/pdf/2506.00699

What is a double star-product?
Double Poisson brackets, introduced by M. Van den Bergh in 2004, are noncommutative analogs of the usual Poisson brackets in the sense of the Kontsevich-Rosenberg principle: they induce Poisson structures on the space of $N$-dimensional representations $\operatorname{Rep}_N(A)$ of an associative algebra $A$ for any $N$. The problem of deformation quantization of double Poisson brackets was raised by D. Calaque in 2010, and had remained open since then. In this paper, we address this problem b…

Quantum Hall Effect and Chern Phases in the 1/5-Depleted Square Lattice
Sara Aghtouman, Godfrey Gumbs, Mir Vahid Hosseini
https://arxiv.org/abs/2507.00932 …

Quantum Hall Effect and Chern Phases in the 1/5-Depleted Square Lattice
We investigate the fractional energy spectrum and quantum Hall response of a two-dimensional 1/5-depleted square lattice subjected to a perpendicular magnetic field. Using a tight-binding model that includes both nearest-neighbor (t_1) and next-nearest-neighbor (t_2) hopping, we compute the Hofstadter butterfly and extract quantized Hall conductivities via Chern number calculations. In the absence of diagonal hopping (t_2 =0), the spectrum exhibits exact particle-hole and flux-inversion symmetr…

90gCO2/kWh National Grid CO2 intensity so-so wrt last 24h so don't run big appliances now if you can wait. #CO2

GB Grid Intensity Status - Earth Notes
Live marginal carbon intensity of the grid in Great Britain.

A novel sensitivity analysis method for agent-based models stratifies \emph{in-silico} tumor spheroid simulations
Edward H. Rohr, John T. Nardini
https://arxiv.org/abs/2506.00168 …

A novel sensitivity analysis method for agent-based models stratifies \emph{in-silico} tumor spheroid simulations
Agent-based models (ABMs) are widely used in biology to understand how individual actions scale into emergent population behavior. Modelers employ sensitivity analysis (SA) algorithms to quantify input parameters' impact on model outputs, however, it is hard to perform SA for ABMs due to their computational and complex nature. In this work, we develop the \textbf{S}imulate, \textbf{S}ummarize, \textbf{R}educe, \textbf{C}luster, and \textbf{A}nalyze (SSRCA) methodology, a machine-learning based …

S\"{o}ze: One Network Telemetry Is All You Need for Per-flow Weighted Bandwidth Allocation at Scale
Weitao Wang, T. S. Eugene Ng
https://arxiv.org/abs/2506.00834

Söze: One Network Telemetry Is All You Need for Per-flow Weighted Bandwidth Allocation at Scale
Weighted bandwidth allocation is a powerful abstraction that has a wide range of use cases in modern data center networks. However, realizing highly agile and precise weighted bandwidth allocation for large-scale cloud environments is fundamentally challenging. In this paper, we propose Söze, a lightweight decentralized weighted bandwidth allocation system that leverages simple network telemetry features of commodity Ethernet switches. Given the flow weights, Söze can effectively use the tele…

[2025-06-03 Tue (UTC), 4 new articles found for cs.CG Computational Geometry]
#toXiv_bot_toot

Modular orthogonal Yangians
Hao Chang, Hongmei Hu
https://arxiv.org/abs/2506.00395 https://arxiv.org/pdf/2506.00395

Modular orthogonal Yangians
We study the (extended) orthogonal Yangians associated to the Lie algebras types $B$ and $D$ over a field of positive characteristic. We define the $p$-center for the Yangians and obtain an explicit description of the center in terms of Drinfeld generators, showing that the center is generated by its Harish-Chandra center together with a large $p$-center.

Gender Differences in International Research Collaboration in European Union
Elsa Fontainha, Tanya Ara\'ujo
https://arxiv.org/abs/2507.00619 https://…

Gender Differences in International Research Collaboration in European Union
This paper investigates International Research Collaboration (IRC) among European Union (EU) countries from 2011 to 2022, with emphasis on gender-based authorship patterns. Drawing from the Web of Science Social Science Citation Index (WoS-SSCI) database, a large dataset of IRC articles was constructed, annotated with categories of authorship based on gender, author affiliation, and COVID-19 subject as topic. Using network science, the study maps collaboration structures and reveals gendered di…

Diffusion of acceptor dopants in monoclinic $\beta$-Ga$_2$O$_3$
Channyung Lee, Michael A. Scarpulla, Elif Ertekin, Joel B. Varley
https://arxiv.org/abs/2507.00906

Diffusion of acceptor dopants in monoclinic $β$-Ga$_2$O$_3$
$β$-Ga$_2$O$_3$ is a leading ultra-wide band gap semiconductor, but its performance depends on precise control over dopant incorporation and stability. In this work, we use first-principles calculations to systematically assess the diffusion behavior of eight potential deep-level substitutional acceptors (Au, Ca, Co, Cu, Fe, Mg, Mn, and Ni) in $β$-Ga$_2$O$_3$. We consider two key diffusion mechanisms: (i) interstitial diffusion under non-equilibrium conditions relevant to ion implantation, an…

Improving statistical learning methods via features selection without replacement sampling and random projection
Sulaiman khan, Muhammad Ahmad, Fida Ullah, Carlos Aguilar Iba\~nez, Jos\'e Eduardo Valdez Rodriguez
https://arxiv.org/abs/2506.00053

Improving statistical learning methods via features selection without replacement sampling and random projection
Cancer is fundamentally a genetic disease characterized by genetic and epigenetic alterations that disrupt normal gene expression, leading to uncontrolled cell growth and metastasis. High-dimensional microarray datasets pose challenges for classification models due to the "small n, large p" problem, resulting in overfitting. This study makes three different key contributions: 1) we propose a machine learning-based approach integrating the Feature Selection Without Re-placement (FSWOR) technique…

Federated Deep Reinforcement Learning-Driven O-RAN for Automatic Multirobot Reconfiguration
Faisal Ahmed, Myungjin Lee, Shao-Yu Lien, Suresh Subramaniam, Motoharu Matsuura, Hiroshi Hasegawa, Shih-Chun Lin
https://arxiv.org/abs/2506.00822

Federated Deep Reinforcement Learning-Driven O-RAN for Automatic Multirobot Reconfiguration
The rapid evolution of Industry 4.0 has led to the emergence of smart factories, where multirobot system autonomously operates to enhance productivity, reduce operational costs, and improve system adaptability. However, maintaining reliable and efficient network operations in these dynamic and complex environments requires advanced automation mechanisms. This study presents a zero-touch network platform that integrates a hierarchical Open Radio Access Network (O-RAN) architecture, enabling the …

[2025-06-03 Tue (UTC), 5 new articles found for math.QA Quantum Algebra]
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A Practical Guide to Interpretable Role-Based Clustering in Multi-Layer Financial Networks
Christian Franssen, Iman van Lelyveld, Bernd Heidergott
https://arxiv.org/abs/2507.00600

A Practical Guide to Interpretable Role-Based Clustering in Multi-Layer Financial Networks
Understanding the functional roles of financial institutions within interconnected markets is critical for effective supervision, systemic risk assessment, and resolution planning. We propose an interpretable role-based clustering approach for multi-layer financial networks, designed to identify the functional positions of institutions across different market segments. Our method follows a general clustering framework defined by proximity measures, cluster evaluation criteria, and algorithm sel…

Adsorbate-induced formation of a surface-polarity-driven nonperiodic superstructure
Chi Ming Yim, Yu Zheng, Olivia R. Armitage, Dibyashree Chakraborti, Craig J. Wells, Seunghyun Khim, Andrew P. Mackenzie, Peter Wahl
https://arxiv.org/abs/2507.00809

Adsorbate-induced formation of a surface-polarity-driven nonperiodic superstructure
The chemical and electronic properties of surfaces and interfaces are important for many technologically relevant processes, be it in information processing, where interfacial electronic properties are crucial for device performance, or in catalytic processes, which depend on the types and densities of active nucleation sites for chemical reactions. Quasi-periodic and nonperiodic crystalline surfaces offer new opportunities because of their inherent inhomogeneity, resulting in localisation and …

[2025-06-03 Tue (UTC), 6 new articles found for q-bio.QM Quantitative Methods]
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RAIL: An Accurate and Fast Angle-inferred Localization Algorithm for UAV-WSN Systems
Ze Zhang, Qian Dong
https://arxiv.org/abs/2506.00766 https://

RAIL: An Accurate and Fast Angle-inferred Localization Algorithm for UAV-WSN Systems
Location information is a fundamental requirement for unmanned aerial vehicles (UAVs) and other wireless sensor networks (WSNs). However, accurately and efficiently localizing sensor nodes with diverse functionalities remains a significant challenge, particularly in a hardware-constrained environment. To address this issue and enhance the applicability of artificial intelligence (AI), this paper proposes a localization algorithm that does not require additional hardware. Specifically, the angle…

Shuffle algebras, lattice paths and quantum toroidal $\mathfrak{gl}_{n|m}$
Alexandr Garbali, Andrei Negu\c{t}
https://arxiv.org/abs/2507.00538 https://

Shuffle algebras, lattice paths and quantum toroidal $\mathfrak{gl}_{n|m}$
We describe and compute various families of commuting elements of the matrix shuffle algebra of type $\mathfrak{gl}_{n|m}$, which is expected to be isomorphic to quantum toroidal $\mathfrak{gl}_{n|m}$. Our formulas are given in terms of partial traces of products of $R$-matrices of the quantum affine algebra $U_t(\dot{\mathfrak{gl}}_{n|m})$, and have a lattice path interpretation. Our calculations are based on the machinery of the quantum toroidal algebras and a new anti-homomorp…

Evolutionary Dynamics with Self-Interaction Learning in Networked Systems
Ziyan Zeng, Minyu Feng, Attila Szolnoki
https://arxiv.org/abs/2507.00422 https://…

Evolutionary Dynamics with Self-Interaction Learning in Networked Systems
The evolution of cooperation in networked systems helps to understand the dynamics in social networks, multi-agent systems, and biological species. The self-persistence of individual strategies is common in real-world decision making. The self-replacement of strategies in evolutionary dynamics forms a selection amplifier, allows an agent to insist on its autologous strategy, and helps the networked system to avoid full defection. In this paper, we study the self-interaction learning in the netw…

Robust Ferroelectricity in Silicon Dioxide upon Intercalation of Ammonia
Yaxin Gao, Menghao Wu, Jun-Ming Liu
https://arxiv.org/abs/2507.00804 https://

Robust Ferroelectricity in Silicon Dioxide upon Intercalation of Ammonia
The nanoelectronic applications of current ferroelectrics have been greatly impeded by their incompatibility with silicon. In this paper we propose a way to induce ferroelectricity in silicon dioxide (SiO2), which is still the most widely used dielectric material in silicon-based chips. We show first-principles evidence that the intercalation of NH3 molecules into crystalline SiO2 is exothermic, where NH3 molecules form quasi-bonds with SiO2, giving rise to large and robust polarizations. In ge…

Sum Rate Maximization for Wireless Powered Pinching-Antenna Systems (PASS)
Yixuan Li, Ji Wang, Ming Zeng, Yuanwei Liu
https://arxiv.org/abs/2506.00355 http…

Sum Rate Maximization for Wireless Powered Pinching-Antenna Systems (PASS)
In this letter, we investigate a novel wireless powered communication network (WPCN) enabled by a pinching-antenna system (PASS), in which multiple pinching antennas (PAs) are activated on a waveguide to establish strong line-of-sight (LoS) links with multiple devices. In this system, time division multiple access (TDMA) and non-orthogonal multiple access (NOMA) protocols are adopted to fully explore the potential of the wireless information transmission. To maximize the sum rate of the PASS-WP…

Critical elements in algebras of numerical events
Dietmar Dorninger, Helmut L\"anger
https://arxiv.org/abs/2507.00194 https://ar…

Critical elements in algebras of numerical events
The probability p(s) of the occurrence of an event pertaining to a physical system which is observed in different states s determines a function p from the set S of states of the system to [0,1]. The function p is called a numerical event or more precisely an S-probability. When appropriately structured, sets P of numerical events form so-called algebras of S-probabilities, which are orthomodular posets that can serve as quantum logics. If one deals with a classical physical system, then P will…

[2025-07-02 Wed (UTC), 3 new articles found for cs.SI Social and Information Networks]
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Decomposition of general grain boundaries
Wei Wan, Junwen Deng, Changxin Tang
https://arxiv.org/abs/2507.00759 https://arxiv.org/pdf/…

Decomposition of general grain boundaries
As a central part of microstructure evolution, grain boundary (GB) migration is believed to be both monolithic and unidirectional. But here, we introduce the concept of GB decomposition: one GB separates into two new GBs by controlling the Peach-Koehler forces on its disconnections. Molecular dynamics simulation is used to reveal the disconnection mechanisms and direction-dependent motion behaviors associated with the reversible decomposition of a nickel Σ7 general GB. We also observed a decom…

Direct-to-Cell: A First Look into Starlink's Direct Satellite-to-Device Radio Access Network through Crowdsourced Measurements
Jorge Garcia-Cabeza, Javier Albert-Smet, Zoraida Frias, Luis Mendo, Santiago Andr\'es Azcoitia, Eduardo Yraola
https://arxiv.org/abs/2506.00283

Direct-to-Cell: A First Look into Starlink's Direct Satellite-to-Device Radio Access Network through Crowdsourced Measurements
Low Earth Orbit (LEO) satellite mega-constellations have recently emerged as a viable access solution for broadband services in underserved areas. In 2024, Direct Satellite-to-Device (DS2D) communications, which enable unmodified smartphones to connect directly to spaceborne base stations, entered large-scale beta testing, with Starlink globally leading deployments. This paper presents the first measurement study of commercial DS2D services. Using crowdsourced mobile network data collected in t…

[2025-07-02 Wed (UTC), 3 new articles found for math.QA Quantum Algebra]
toXiv_bot_toot

Replaced article(s) found for cs.SI. https://arxiv.org/list/cs.SI/new
[1/1]:
- Who is driving the conversation? Analysing the nodality of British MPs and journalists on social ...
Chakraborty, Castro-Gonzalez, Margetts, Rajpal, Guariso, Bright

The interplay of ferroelectricity and magneto-transport in non-magnetic moir\'{e} superlattices
Siqi Jiang, Renjun Du, Jiawei Jiang, Gan Liu, Jiabei Huang, Yu Du, Yaqing Han, Jingkuan Xiao, Di Zhang, Fuzhuo Lian, Wanting Xu, Siqin Wang, Lei Qiao, Kenji Watanabe, Takashi Taniguchi, Xiaoxiang Xi, Wei Ren, Baigeng Wang, Alexander S. Mayorov, Kai Chang, Hongxin Yang, Lei Wang, Geliang Yu

The interplay of ferroelectricity and magneto-transport in non-magnetic moiré superlattices
The coupling of ferroelectricity and magnetic order provides rich tunability for engineering material properties and demonstrates great potential for uncovering novel quantum phenomena and multifunctional devices. Here, we report interfacial ferroelectricity in moiré superlattices constructed from graphene and hexagonal boron nitride. We observe ferroelectric polarization in an across-layer moiré superlattice with an intercalated layer, demonstrating a remnant polarization comparable to its n…

Cyrus : A DRL-based Puncturing Solution to URLLC/eMBB Multiplexing in O-RAN
Ehsan Ghoreishi, Bahman Abolhassani, Yan Huang, Shiva Acharya, Wenjing Lou, Y. Thomas Hou
https://arxiv.org/abs/2506.00167

Cyrus+: A DRL-based Puncturing Solution to URLLC/eMBB Multiplexing in O-RAN
Puncturing is a promising technique in 3GPP to multiplex Enhanced Mobile Broadband (eMBB) and Ultra-Reliable Low Latency Communications (URLLC) traffic on the same 5G New Radio (NR) air interface. The essence of puncturing is to transmit URLLC packets on demand upon their arrival, by preempting the radio resources (or subcarriers) that are already allocated to eMBB traffic. Although it is considered most bandwidth efficient, puncturing URLLC data on eMBB can lead to degradation of eMBB's perfor…

Replaced article(s) found for math.QA. https://arxiv.org/list/math.QA/new
[1/1]:
- On Gr\"{u}n's lemma for perfect skew braces
Cindy Tsang

Testing the spin-bath view of self-attention: A Hamiltonian analysis of GPT-2 Transformer
Satadeep Bhattacharjee, Seung-Cheol Lee
https://arxiv.org/abs/2507.00683

Testing the spin-bath view of self-attention: A Hamiltonian analysis of GPT-2 Transformer
The recently proposed physics-based framework by Huo and Johnson~\cite{huo2024capturing} models the attention mechanism of Large Language Models (LLMs) as an interacting two-body spin system, offering a first-principles explanation for phenomena like repetition and bias. Building on this hypothesis, we extract the complete Query-Key weight matrices from a production-grade GPT-2 model and derive the corresponding effective Hamiltonian for every attention head. From these Hamiltonians we obtain a…

Replaced article(s) found for cs.NI. https://arxiv.org/list/cs.NI/new
[1/1]:
- Retrieval Augmented Generation Based LLM Evaluation For Protocol State Machine Inference With Cha...
Youssef Maklad, Fares Wael, Wael Elsersy, Ali Hamdi

Structural, dielectric, and ferroelectric characteristics of the low-temperature sintered 65PMN-35PT sample for electroceramic applications
B. Ramachandran, N. Sudarshan, G. Mangamma, M. S. Ramachandra Rao
https://arxiv.org/abs/2507.00614

Structural, dielectric, and ferroelectric characteristics of the low-temperature sintered 65PMN-35PT sample for electroceramic applications
A single-phase 65PMN-35PT ceramic was synthesized at a relatively low temperature (875 oC) using a modified columbite method. X-ray diffraction analysis confirmed the single-phase formation of perovskite 65PMN-35PT with a tetragonal structure. Morphological studies indicated that the sample consisted of small grains with a size of about 2 micro-m. The dielectric properties of the material demonstrate its relaxor behavior near the ferroelectric transition temperature, TC = 457 K. The saturation …

High pressure synthesis and structural study of AuGa2 intermetallic compound
Azkar Saeed Ahmad, Zhuoyang Yu, Sizhe Wang, Tong Weng, Wenting Lu, Baihong Sun, Jiewu Song, Qian Zhang, Martin Kunz, Bihan Wang, Elissaios Stavrou
https://arxiv.org/abs/2507.00592

High pressure synthesis and structural study of AuGa2 intermetallic compound
We report the synthesis of the AuGa2 intermetallic compound, using a direct reaction of the relevant elements at room temperature and at very low pressure. The pressure needed to synthesize the AuGa2 compound is below 1 GPa, that is at the lower limit of modern large volume presses, routinely used to synthesize other commercially available materials. This study presents a new method of synthesizing AuGa2, which is much more cost efficient and environmentally friendly than the previously used hi…

Unveiling the impact of trivalent metal cation transmutation on Cs$_{2}$AgM(III)Cl$_{6}$ double perovskites using many-body perturbation theory
Surajit Adhikari, Priya Johari
https://arxiv.org/abs/2507.00590

Unveiling the impact of trivalent metal cation transmutation on Cs$_{2}$AgM(III)Cl$_{6}$ double perovskites using many-body perturbation theory
Lead-free halide double perovskites A$_{2}$M(I)M(III)X$_{6}$ have garnered significant attention in the past decade as promising alternatives to CsPbX$_{3}$ perovskites, addressing concerns related to lead toxicity and material instability. In this work, we employ a trivalent metal cation transmutation strategy to design a series of inorganic Pb-free halide double perovskites Cs$_{2}$AgM(III)Cl$_{6}$ and perform a comprehensive investigation into their potential for applications in optoelectron…

Monolayer Two-dimensional Materials Database (ML2DDB) and Applications
Zhongwei Liu, Zhimin Zhang, Xuwei Liu, Mingjia Yao, Xin He, Yuanhui Sun, Xin Chen, Lijun Zhang
https://arxiv.org/abs/2507.00584

Monolayer Two-dimensional Materials Database (ML2DDB) and Applications
The discovery of two-dimensional (2D) materials with tailored properties is critical to meet the increasing demands of high-performance applications across flexible electronics, optoelectronics, catalysis, and energy storage. However, current 2D material databases are constrained by limited scale and compositional diversity. In this study, we introduce a scalable active learning workflow that integrates deep neural networks with density functional theory (DFT) calculations to efficiently explor…

Temperature dependent Resonant X-ray Inelastic Scattering at Ni L3-edge for NaNiO2 and LiNiO2
Quentin Jacquet (Univ. Grenoble, Alpes, CEA, CNRS, Grenoble INP, IRIG, SyMMES, F-38000 Grenoble, France), Kurt Kummer (European Synchrotron Radiation Facility, F-38043 Grenoble Cedex, France), Marie Guignard (Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, Pessac, France), Elisa Grepin (Chimie du Solide-Energie, UMR 8260, College de France, Paris Cedex 05, France, Reseau sur le Stockage E…

Temperature dependent Resonant X-ray Inelastic Scattering at Ni L3-edge for NaNiO2 and LiNiO2
LiNiO2 is a promising cathode material for Li-ion battery but its atomic and electronic structure is under debate. Indeed, two sets of Ni-O distances are identified from local structural probes that are related with either Jahn-Teller distortion or bond disproportionation of NiO6 octahedra. Moreover, LiNiO2 undergoes a monoclinic to rhombohedral transition at 200 K which origin is still unclear. On the other hand, isostructural NaNiO2 shows differences from LiNiO2, as it is a well-known Jahn-Te…

Influence of oxygen-defects on intraband terahertz conductivity of carbon nanotubes
Maksim Paukov, Shuang Sun, Dmitry Krasnikov, Arina Radivon, Gennady Komandin, Andrey Vyshnevyy, Emil Chiglintsev, Stanislav Colar, Kirill Brekhov, Kirill Zaytsev, Sergei Garnov, Nadzeya Valynets, Albert Nasibulin, Aleksey Arsenin, Valentyn Volkov, Alexander Chernov, Yan Zhang, Maria Burdanova

Influence of oxygen-defects on intraband terahertz conductivity of carbon nanotubes
The exceptional charge transport properties of single-walled carbon nanotubes (SWCNTs) enable numerous ultrafast optoelectronic applications. Modifying SWCNTs by introducing defects significantly impacts the performance of nanotube-based devices, making defect characterization crucial. This research tracked these effects in oxygen plasma-treated SWCNT thin films. Sub-picosecond electric fields of varying strengths and additional photoexcitation were used to assess how defects influence charge c…

Process-aware and high-fidelity microstructure generation using stable diffusion
Hoang Cuong Phan, Minh Tien Tran, Chihun Lee, Hoheok Kim, Sehyok Oh, Dong-Kyu Kim, Ho Won Lee
https://arxiv.org/abs/2507.00459

Process-aware and high-fidelity microstructure generation using stable diffusion
Synthesizing realistic microstructure images conditioned on processing parameters is crucial for understanding process-structure relationships in materials design. However, this task remains challenging due to limited training micrographs and the continuous nature of processing variables. To overcome these challenges, we present a novel process-aware generative modeling approach based on Stable Diffusion 3.5 Large (SD3.5-Large), a state-of-the-art text-to-image diffusion model adapted for micro…

Second-order microscopic nonlinear susceptibility in a centrosymmetric material: application to imaging valence electron motion
Chance Ornelas-Skarin, Tatiana Bezriadina, Matthias Fuchs, Shambhu Ghimire, J. B. Hastings, Quynh L Nguyen, Gilberto de la Pe\~na, Takahiro Sato, Sharon Shwartz, Mariano Trigo, Diling Zhu, Daria Popova-Gorelova, David A. Reis

Second-order microscopic nonlinear susceptibility in a centrosymmetric material: application to imaging valence electron motion
We report measurements of phase-matched nonlinear x-ray and optical sum-frequency generation from single-crystal silicon using sub-resonant 0.95 eV laser pulses and 9.5 keV hard x-ray pulses from the LCLS free-electron laser. The sum-frequency signal appears as energy and momentum sidebands to the elastic Bragg peak. It is proportional to the magnitude squared of the relevant temporal and spatial Fourier components of the optically induced microscopic charges/currents. We measure the first- and…

Enhancing ferroelectric stability: Wide-range of adaptive control in epitaxial HfO2/ZrO2 superlattices
Jingxuan Li, Shiqing Deng, Liyang Ma, Yangyang Si, Chao Zhou, Kefan Wang, Sizhe Huang, Jiyuan Yang, Yunlong Tang, Yu-Chieh Ku, Chang-Yang Kuo, Yijie Li, Sujit Das, Shi Liu, Zuhuang Chen
https://arxiv.org/abs/2507.00393

Enhancing ferroelectric stability: Wide-range of adaptive control in epitaxial HfO2/ZrO2 superlattices
The metastability of the polar phase in HfO2, despite its excellent compatibility with the complementary metal-oxide-semiconductor process, remains a key obstacle for its industrial applications. Traditional stabilization approaches, such as doping, often induce crystal defects and impose constraints on the thickness of ferroelectric HfO2 thin films. These limitations render the ferroelectric properties vulnerable to degradation, particularly due to phase transitions under operational condition…

Generation of Pure Spin Current with Insulating Antiferromagnetic Materials
Yingwei Chen, Junyi Ji, Liangliang Hong, Xiangang Wan, Hongjun Xiang
https://arxiv.org/abs/2507.00369

Generation of Pure Spin Current with Insulating Antiferromagnetic Materials
The generation of pure spin currents is critical for low-dissipation spintronic applications, yet existing methods relying on spin-orbit coupling or ferromagnetic interfaces face challenges in material compatibility and operational robustness. We propose a paradigm-shifting approach to generate symmetry-protected pure spin currents by applying mechanical stress on insulating antiferromagnetic materials, i.e., the pure piezospintronic effect. We first classify magnetic point groups enabling pure…

Femtosecond photocurrents by the Dresselhaus bulk spin-galvanic effect in an inversion-asymmetric ferromagnet
Junwei Tong, Zdenek Kaspar, Afnan Alostaz, Reza Rouzegar, Chihun In, Tim Titze, Maximilian Staabs, Genaro Bierhance, Yanzhao Wu, Holger Grisk, Jakob Walowski, Markus M\"unzenberg, Felicitas Gerhard, Johannes Kleinlein, Tobias Kie{\ss}ling, Charles Gould, Laurens W. Molenkamp, Xianmin Zhang, Daniel Steil, Tom S. Seifert, Tobias Kampfrath

Femtosecond photocurrents by the Dresselhaus bulk spin-galvanic effect in an inversion-asymmetric ferromagnet
We study ultrafast photocurrents in thin films of a model ferromagnetic metal with broken bulk inversion symmetry, the half-metallic Heusler compound NiMnSb, following excitation with an optical pump pulse with photon energy 1.55 eV. Remarkably, in terms of the direction of the sample magnetization M, all photocurrents are found to be a superposition of a component with Rashba- and Dresselhaus-type symmetry. We explain the Dresselhaus bulk photocurrent as follows: Pump-induced electron heating …

AstroECP: towards more practical Electron Channeling Contrast Imaging
M. Haroon Qaiser, Lukas Berners, Robin J. Scales, Tianbi Zhang, Martin Heller, Jiri Dluhos, Sandra Korte-Kerzel, T. Ben Britton
https://arxiv.org/abs/2507.00354

AstroECP: towards more practical Electron Channeling Contrast Imaging
Electron channeling contrast imaging (ECCI) is a scanning electron microscopy (SEM) based technique that enables bulk-sample characterization of crystallographic defects (e.g. dislocations, stacking faults, low angle boundaries). Despite its potential, ECCI remains underused for quantitative defect analysis as compared to transmission electron microscope (TEM) based methods. Here, we overcome barriers that limit the use of ECCI including optimizing signal-to-noise contrast, precise determinatio…

Quenching of excitons at grain boundaries in C60 thin films
Rysa Greenwood, Bradley G. Guislain, MengXing Na, Alexandra B. Tully, Sergey Zhdanovich, Jerry Icban Dadap, Sydney K. Y. Dufresne, Vanessa King, Jiabin Yu, Giorgio Levy, Arthur K. Mills, Matteo Michiardi, Andrea Damascelli, Sarah A. Burke, David J. Jones
https://arxiv.o…

Quenching of excitons at grain boundaries in C60 thin films
Exciton lifetimes play a critical role in the performance of organic optoelectronic devices. In this work, we investigate how the presence of multiple rotational domains, and therefore grain boundaries, impacts exciton dynamics in thin films of C60/Au(111) using time and angle-resolved photoemission spectroscopy (TR-ARPES). We find that films with multiple rotational domains exhibit shorter exciton lifetimes and evidence of exciton-exciton annihilation, even when one domain predominates. Scanni…

Termination-Dependent Resistive Switching in SrTiO$_3$ Valence Change Memory Cells
Marko Mladenovi\'c, Manasa Kaniselvan, Christoph Weilenmann, Alexandros Emboras, Mathieu Luisier
https://arxiv.org/abs/2507.00318

Termination-Dependent Resistive Switching in SrTiO$_3$ Valence Change Memory Cells
Valence change memory (VCM) cells based on SrTiO$_3$ (STO), a perovskite oxide, are a promising type of emerging memory device. While the operational principle of most VCM cells relies on the growth and dissolution of one or multiple conductive filaments, those based on STO are known to exhibit a distinctive, 'interface-type' switching, which is associated with the modulation of the Schottky barrier at their active electrode. Still, a detailed picture of the processes that lead to interface-typ…

Phase field dislocation dynamics study of grain boundary-dislocation interactions
Brayan Murgas, Avanish Mishra, Nithin Mathew, Abigail Hunter
https://arxiv.org/abs/2507.00303

Phase field dislocation dynamics study of grain boundary-dislocation interactions
A new phase field dislocation dynamics formulation is presented, which couples micromechanical solvers and the time-dependent Ginzburg-Landau equation. Grain boundary (GB)-dislocation interactions are studied by describing GBs as inclusions. Grain boundary properties are computed from Molecular Statics simulations and an additional contribution to the total energy that takes into account the GB energy is considered in the calculations. Interaction of a screw dislocation with minimum energy and …

Engineering NV Centers via Hydrogen-Driven Defect Chemistry in CVD Diamonds for Quantum Applications: NVHx Dissociations into NV, Origin of 468nm Center, and Cause of Brown Coloration
Mubashir Mansoor, Kamil Czelej, Sally Eaton-Maga\~na, Mehya Mansoor, R\"umeysa Salci, Maryam Mansoor, Taryn Linzmeyer, Yahya Sorkhe, Kyaw S. Moe, \"Omer \"Ozyildirim, Kouki Kitajima, Mehmet Ali Sarsil, Taylan Erol, G\"okay Hamamci, Onur Ergen, Adnan Kurt, Arya Andre Akhavan, Zuhal Er, …

Engineering NV Centers via Hydrogen-Driven Defect Chemistry in CVD Diamonds for Quantum Applications: NVHx Dissociations into NV, Origin of 468nm Center, and Cause of Brown Coloration
Achieving high NV center conversion efficiency remains a key challenge in advancing diamond-based quantum technologies. The generally accepted mechanism for NV formation is that irradiation-induced vacancies become mobile during annealing and are trapped by substitutional nitrogen. However, the suggested mechanism does not consider the presence and role of hydrogen in the diamond and its influence on the NV formation pathway. This is despite ab-initio calculations, which strongly suggest the fo…

Deformation band patterns and dislocation structures in finite strain crystal viscoplasticity
Jean-Michel Scherer
https://arxiv.org/abs/2507.00232 https://…

Deformation band patterns and dislocation structures in finite strain crystal viscoplasticity
Deformation band patterning in single crystals is investigated using a finite strain crystal viscoplasticity model based on the evolution of dislocation densities. In the presence of strong latent hardening and weak rate dependence, the deformation organizes into laminate microstructures consisting of single-slip regions separated by dislocation walls. The influence of material and numerical parameters on the nucleation and morphology of these patterns is analyzed in 2D single crystals under pl…

Electronic structure and optical absorption of armchair graphene/boron nitride lateral heterostructures from first principles and models
Elisa Serrano Richaud, Sylvain Latil, Lorenzo Sponza
https://arxiv.org/abs/2507.00171

Electronic structure and optical absorption of armchair graphene/boron nitride lateral heterostructures from first principles and models
We investigate the electronic and optical properties of lateral heterostructures made of alternated armchair ribbons of graphene and hexagonal boron nitride. We employ ab initio theories (DFT and the G0W0 method) as well as a tight-binding ladder model originally introduced to study the gapwidth of isolated nanoribbons. After investigating the charge distribution across the interface, we identify the nature of the states around the gap and scrutinize their evolution as a function of the charact…