Tootfinder

Benchmarking XRootD-HTTPS on 400Gbps Links with Variable Latencies
Aashay Arora, Diego Davila, Frank W\"urthwein, John Graham, Dima Mishin, Justas Balcas, Tom Lehman, Xi Yang, Chin Guok, Harvey Newman
https://arxiv.org/abs/2508.00228

Benchmarking XRootD-HTTPS on 400Gbps Links with Variable Latencies
In anticipation of the High Luminosity-LHC era, there is a critical need to oversee software readiness for upcoming growth in network traffic for production and user data analysis access. This paper looks into software and hardware required improvements in US-CMS Tier-2 sites to be able to sustain and meet the projected 400 Gbps bandwidth demands while tackling the challenge posed by varying latencies between sites. Specifically, our study focuses on identifying the performance of XRootD HTTP t…

Magnetic behavior of $5d^1$ Re-based double perovskite Sr$_2$ZnReO$_6$
Muhammad Maikudi Isah, Biswajit Dalal, Xun Kang, Dario Fiore Mosca, Ifeanyi John Onuorah, Valerio Scagnoli, Pietro Bonf\`a, Roberto De Renzi, Alexei A. Belik, Cesare Franchini, Kazunari Yamaura, Samuele Sanna
https://arxiv.org/abs/2509.04071

Magnetic behavior of $5d^1$ Re-based double perovskite Sr$_2$ZnReO$_6$
The subtle interplay between spin-orbit coupling, exchange interactions, and cation ordering can lead to exotic magnetic states in transition-metal ions. We report a comprehensive study of the Re-based (5$d^1$) ordered double perovskite oxide Sr$_2$ZnReO$_6$ combining synchrotron x-ray diffraction (XRD), magnetic susceptibility, muon spin relaxation ($μ$SR) measurements, and density functional theory (DFT) calculations. XRD reveals that Sr$_2$ZnReO$_6$ crystallizes in the monoclinic structure …

Straightforward Method to Orient Black Phosphorus from Bulk to Thin Layers using a Standard Green Laser
Etienne Carr\'e, Fr\'ed\'eric Fossard, Jean-S\'ebastien M\'erot, Denis Boivin, Nicolas Horezan, Victor Zatko, Florian Godel, Bruno Dlubak, Marie-Blandine Martin, Pierre Seneor, Etienne Gaufres, Julien Barjon, Annick Loiseau, Ingrid Stenger

Straightforward Method to Orient Black Phosphorus from Bulk to Thin Layers using a Standard Green Laser
The crystallographic orientation of anisotropic 2D materials plays a crucial role in their physical properties and device performance. However, standard orientation techniques such as transmission electron microscopy (TEM) or X-ray diffraction (XRD) can be complex and less accessible for routine characterization. In this study, we investigate the orientation of black phosphorus (BP) from bulk crystals to thin layers using angle-resolved polarized Raman spectroscopy (ARPRS) with a single-wavelen…

On the origin of a possible hard VHE spectrum from M87 discovered by LHAASO
Rui Xue, Jia-Chun He, Dingrong Xiong, Ze-Rui Wang
https://arxiv.org/abs/2508.01986 https://

On the origin of a possible hard VHE spectrum from M87 discovered by LHAASO
Recent LHAASO observations hint at potential spectral hardening around 20 TeV in M87's very high energy (VHE) emission, suggesting a possible new radiation component. In this work, we construct averaged multiwavelength SEDs by combining data from Chandra and Swift-UVOT/XRT covering the same period as the LHAASO detection to investigate the origin of this feature. We test several radiation mechanisms, including the pp interaction, proton synchrotron emission, photomeson process and two-zone lept…

Search for Active and Inactive Ion Insertion Sites in Organic Crystalline Materials
Harshan Reddy Gopidi, Alae Eddine Lakraychi, Abhishek A. Panchal, Yiming Chen, V. S. Chaitanya Kolluru, Jiaqi Wang, Ying Chen, Liu Jue, Kamila Wiaderek, Maria K. Y. Chan, Yan Yao, Pieremanuele Canepa
https://arxiv.org/abs/2510.00278

Search for Active and Inactive Ion Insertion Sites in Organic Crystalline Materials
The position of mobile active and inactive ions, specifically ion insertion sites, within organic crystals, significantly affects the properties of organic materials used for energy storage and ionic transport. Identifying the positions of these atom (and ion) sites in an organic crystal is difficult, especially when the element has a low X-ray scattering power, such as lithium (Li) and hydrogen, which are difficult to detect with powder X-ray diffraction (XRD) methods. First-principles calcula…

The Very Faint X-ray Transient 4XMM J174610.7-290020 at the Galactic center
Giovanni Stel, Gabriele Ponti, Nathalie Degenaar, Lara Sidoli, Sandro Mereghetti, Kaya Mori, Tong Bao, Giulia Illiano, Samaresh Mondal, Mark Reynolds, Chichuan Jin, Tianying Lian, Shifra Mandel, Simone Scaringi, Shuo Zhang, Grace Sanger-Johnson, Rudy Wijnands, Jon M. Miller, Jamie Kennea, Zhenlin Zhu

The Very Faint X-ray Transient 4XMM J174610.7-290020 at the Galactic center
Very Faint X-ray Transients (VFXTs) are a class of X-ray binary systems that exhibit occasional outbursts with peak X-ray luminosities (L_X< 1e36 erg s^-1) much lower than typical X-ray transients. On 22nd February 2024, during its daily Galactic center monitoring, Swift-XRT detected a VFXT, 7 arcmin from Sgr A* dubbing it Swift J174610--290018. We aim to characterize the outburst that occurred in 2024, and a second, distinct outburst in 2025, to understand the nature and accretion flow propert…

Lithium depth profiling in NMC/Graphite commercial coin cells under high C-rate cycling
Naisargi Kanabar, Seiichiro Higashiya, Daniele Cherniak, Devendra Sadana, Stephen Bedell, Haralabos Efstathiadis
https://arxiv.org/abs/2509.25697

Lithium depth profiling in NMC/Graphite commercial coin cells under high C-rate cycling
This study examines lithium distribution and its evolution in both anode and cathode materials of commercial lithium-ion coin cells subjected to high C-rate cycling, providing insights into lithium loss, trapping, and plating mechanisms. Cells were cycled at 1C to 3C rates, and post-mortem analysis were performed using Li nuclear reaction Analysis (Li-NRA), x-ray diffraction (XRD), and scanning electron microscopy (SEM) equipped with energy-dispersive x-ray spectroscopy (EDS). Li-NRA using the …

Constrain magnetar parameters by taking into account the evolutionary effects of radius and moment of inertia with \emph{Swift}/XRT data
Lin Lan, He Gao, Shunke Ai, Wen-Jin Xie, Yong Yuan, Long Li, Li-Ping Xin, Jian-Yan Wei
https://arxiv.org/abs/2507.11110

Constrain magnetar parameters by taking into account the evolutionary effects of radius and moment of inertia with \emph{Swift}/XRT data
A newly born millisecond magnetar has been proposed as one possible central engine of some gamma-ray bursts (GRBs) with X-ray plateau emission. In this work, we systematically analyzed the \emph{Swift}/XRT data of long GRBs with plateau emission that were detected before 2023 December, and estimated the magnetar parameters by considering the $R/I$ evolutionary effects, and investigated possible relationships among these parameters and their relation to the GRB jet and magnetar wind radiation. W…

Enhanced thermopower in a magnetic semiconductor EuTe4 with multiple charge-density-wave instabilities/
Hidefumi Takahashi, Kiichiro Yoshida, Akitoshi Nakano, Shintaro Ishiwata
https://arxiv.org/abs/2508.16017

Enhanced thermopower in a magnetic semiconductor EuTe4 with multiple charge-density-wave instabilities/
We investigate the layered magnetic semiconductor EuTe4, focusing on its intricate charge-density wave (CDW) states near and above room temperature through single-crystal X-ray diffraction (XRD), magnetic, and thermoelectric measurements.The XRD measurement revealed that the CDW state inducing the polar lattice distortion persists even at 650 K, demonstrating its remarkable thermal stability. Notably, the Seebeck coefficient near room temperature reaches values exceeding 500 uVK-1. This large S…

Structural, optical, and electrical properties of Cu-doped NiO films synthesized by spray pyrolysis for potential gas sensing applications
Eka Nurfani, Grace Grace, Mahardika Yoga Darmawan, Resti Marlina, Jumaeda Jatmika, Asnan Rinovian, Aditya Rianjanu
https://arxiv.org/abs/2509.24197

Structural, optical, and electrical properties of Cu-doped NiO films synthesized by spray pyrolysis for potential gas sensing applications
Cu-doped NiO thin films were deposited on ITO substrates via spray pyrolysis at 450 °C for 1.5 minutes. XRD confirmed a cubic NiO structure, with Cu incorporation reducing crystallite size, increasing interplanar spacing, and expanding the lattice parameter, indicating successful substitution of Cu ions. Optical analysis showed a slight bandgap reduction from 3.70 to 3.65 eV, while PL revealed lower emission intensity, suggesting enhanced defect states and suppressed carrier recombination. Ram…