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Solidification-cell confinement of domain-wall pinning in additively manufactured ferromagnets

Dennis Boakye、Eric K. K. Abavare、Chuang Deng2026-08-20arXiv

As-built printed ferromagnets typically exhibit higher coercivity than optimized wrought materials, yet existing explanations rely on empirical fits or costly simulations. Herein, we provide a missing analytical theory that links print parameters directly to cooling rates, cellular spacing, dislocation density, and do…

Materials Science

A shifted energy barrier approach for phase-field modeling of tensile-dominated brittle fracture

Yaode Yin、Luigi Greco、Hongjun Yu 等 4 位作者2026-08-20arXiv

The classical AT1 phase-field model contains an intrinsic energy barrier for crack nucle ation, which makes the predicted strength depend on the fracture toughness and the regularization length. For tensile-dominated brittle fracture, this barrier is shifted by mapping the Rankine criterion, evaluated on the effective…

Materials Sciencecs.NAmath.NA

Finite-temperature Green's function cluster expansion from thermofield doubles: Breakdown of the polaron picture

M. R. Carbone、S. Fomichev、B. Kloss 等 7 位作者2026-08-20arXiv

We introduce a method, numerically exact in principle, for computing the momentum- and frequency-resolved single-particle Green's function of a polaron at finite temperature. The method, which we refer to as the finite-temperature Green's function cluster expansion, combines two ingredients: the generalized Green's fu…

Materials ScienceStrongly Correlated Electrons

Magneto-optical signal from $\mathrm{Co_2Mn}$-based Heusler thin films in MOKE and BLS

Anna Maria Friedel、Nicolas Fermon、Tobias Böttcher 等 6 位作者2026-08-20arXiv

$\mathrm{Co_2Mn}$-based Heusler compounds offer a versatile, composition-tunable platform for magnonics and spintronics. Among them, the half-metallic $\mathrm{Co_2MnSi}$ is of particular interest for magnonics owing to its ultralow Gilbert damping, yet its weak magneto-optical response in the visible challenges optic…

Mesoscale and Nanoscale PhysicsMaterials ScienceApplied Physics

Mag4: An Automated First-Principles Workflow to Extract Magnetic Interactions, from Pair Couplings to Four-Spin Ring Exchange

Xavier Rocquefelte、Peter Blaha2026-08-20arXiv

Chemists design magnetic materials through structure-property relationships built on pairwise exchange couplings $J$, now extracted routinely from first principles by energy-mapping. But wherever four magnetic centers close a loop---as in cuprate CuO$_2$ planes or infinite-layer square nets---a four-spin ring exchange…

Materials ScienceStrongly Correlated Electronsquant-ph

Hot-Carrier Distribution Spectroscopy by Transconductance in Two-Dimensional Field-Effect Transistors

Katsunori Wakabayashi2026-08-20arXiv

The transconductance $g_m = dI_D/dV_G$ of a field-effect transistor (FET) is conventionally read as a proxy for carrier density. We show that it is instead a spectroscopic probe of the carrier distribution: because $g_m$ weights the spectral current $j(E)$ by the gate-voltage derivative $\partial f(E)/\partial V_G$ an…

Mesoscale and Nanoscale PhysicsMaterials Science

Spin-orbit magnetism in altermagnets

Ruojia Wang、Yuntian Liu、Renzheng Xiong 等 5 位作者2026-08-20arXiv

While the anomalous Hall effect was proposed as a transport fingerprint of altermagnets, it originates from the spin-orbit coupling-induced net magnetization, corresponding to a distinct magnetic phase termed spin-orbit magnetism. However, the microscopic mechanism enabling spin-orbit magnets to yield a prominent anom…

Materials Science

ChemGraph-XANES: An Agentic Framework for XANES Simulation and Curation

Vitor F. Grizzi、Thang Duc Pham、Luke N. Pretzie 等 6 位作者2026-08-20arXiv

Computational X-ray absorption near-edge structure (XANES) is widely used to interpret local coordination environments, oxidation states, and electronic structure, but large computational campaigns are often limited by workflow complexity. We present ChemGraph-XANES, a large language model (LLM)-based agentic framewor…

Materials Sciencecs.AIChemical Physics

Lattice-renormalized geometric frustration drives fast ionic transport

Jianmin Yang、Lin Xie2026-08-20arXiv

Fast ionic transport is commonly understood from two complementary perspectives: soft lattices that facilitate ion migration, and frustrated ionic sublattices that host multiple nearly degenerate configurations. Here, we show that the host lattice and ionic geometric frustration are fundamentally coupled, and together…

Materials Science

Observation of orbital-angular-momentum-driven temperature modulation via the spin Peltier effect

Sang J. Park、Tsuneyoshi Kan、Takamasa Hirai 等 4 位作者2026-08-20arXiv

Angular-momentum transport provides a pathway for controlling energy flow in solids beyond conventional charge-based mechanisms. While spin currents are known to mediate spin-caloritronic phenomena such as the spin Peltier effect (SPE), the role of orbital angular momentum in heat transport remains largely unexplored.…

Materials Science

Ferroelectric Altermagnetic Chern Insulator in magnetic field: electrical control of the Chern number

Meysam Bagheri Tagani、Carmine Autieri2026-08-20arXiv

We investigate electrically controllable Chern topology in a two-dimensional compensated (d)-wave altermagnet described by a lattice-regularized Bernevig--Hughes--Zhang model. In the altermagnetic reference state, the two Kramers sectors acquire momentum-dependent spin splitting and opposite sector Chern numbers, whil…

Mesoscale and Nanoscale PhysicsMaterials Science

DPA4: Pushing the Accuracy-Cost Frontier of Interatomic Potentials with EMFA SO(2) Convolution

Tiancheng Li、Wentao Li、Anyang Peng 等 7 位作者2026-08-20arXiv

Machine-learning interatomic potentials now approach quantum-mechanical accuracy, but the most expressive equivariant architectures are costly to evaluate, and the leading ones depend on auxiliary denoising or direct-force pretraining. We introduce DPA4, an SE(3)-equivariant architecture spanning six size classes from…

Materials ScienceChemical Physicsphysics.comp-ph

Stability Analysis of Superconductivity in $\textit{P6/mmm}$-LaSc$_2$H$_{24}$ and its Experimental Reproducibility from La-Sc Alloys

Dmitrii V. Semenok、Ivan A. Troyan、Zhongyan Wu 等 7 位作者2026-08-20arXiv

In this work, we analyze the feasibility of room-temperature superconductivity in the lanthanum-scandium hydride $\textit{P6/mmm}$-LaSc$_2$H$_{24}$. We demonstrate that the electron-phonon coupling calculations performed using the $σ$-broadening of the double $δ$-function at the Fermi surface lead to a very strong dep…

Materials ScienceSuperconductivity

A Category-Theoretic Framework from Biological Mechanics to Engineered Stimulus-Response Systems

Lee Marom、Skylar Tibbits、Gioele Zardini 等 4 位作者2026-08-20arXiv

Natural materials achieve adaptive behavior through hierarchical organization and coupled mechanisms across scales. Their translation into engineering, however, remains largely heuristic. What is missing is a formal translation framework that carries biological design logic into engineered realization while preserving…

Materials ScienceSoft Condensed Mattercs.CEmath.CT

Coherent multi-dimensional widefield microscopy

Mohammadjavad Azarm、Rizwan Asif、Alessandra Milloch 等 17 位作者2026-08-20arXiv

Understanding how electronic excitations evolve across space and time is essential for revealing the microscopic processes underlying quantum and optoelectronic materials. However, existing approaches cannot simultaneously resolve ultrafast coherent dynamics with microscopic spatial information: pump-probe microscopy…

Materials Sciencephysics.optics

Suppression of local magnetic moment formation and paramagnetic exchange interactions in monolayer Fe$_3$GeTe$_2$

A. A. Katanin、A. N. Rudenko、D. I. Badrtdinov 等 4 位作者2026-08-20arXiv

We study the electronic and magnetic properties of monolayer Fe$_3$GeTe$_2$ within the DFT+DMFT approach in the paramagnetic phase. We argue that this compound is sufficiently far from the local magnetic moment limit, demonstrating non-linear temperature dependencies of the partial inverse local and uniform magnetic s…

Materials ScienceStrongly Correlated Electrons

Tensor-network methodology for real-space super-moiré excitons

Anouar Moustaj、Yitao Sun、Tiago V. C. Antão 等 5 位作者2026-08-20arXiv

Computing excitonic spectra in quasicrystal and super-moiré systems constitutes a formidable challenge due to the exceptional size of the excitonic Hilbert space. Here, we demonstrate a tensor-network method for the real-space Bethe-Salpeter Hamiltonian, allowing us to access the spectra of an excitonic $10^{18}$-dime…

Mesoscale and Nanoscale PhysicsMaterials ScienceStrongly Correlated Electronsphysics.comp-phquant-ph

Engineering altermagnetic symmetry to enable anomalous Hall response in Cr$_{1-x}$Mn$_x$Sb

Miriam G. Fischer、Lukas Odenbreit、Olena Gomonay 等 13 位作者2026-08-20arXiv

Altermagnets are a promising class of materials for spintronic applications. However, compounds that simultaneously combine the symmetry required to support an anomalous Hall effect with good metallic conductivity and magnetic ordering temperatures well above room temperature have remained elusive. Here, we demonstrat…

Materials ScienceApplied Physics

Graphene-enabled coherent (sub-)terahertz wave detection and thickness determination

Ronny de la Bastida、Enzo Rongione、Karuppasamy Pandian Soundarapandian 等 12 位作者2026-08-20arXiv

Phase-sensitive terahertz (THz) detection enables applications ranging from astronomy to non-destructive testing. However, current THz detectors lack phase sensitivity, unless they are combined with external interferometers, or through photomixing. This implies a large footprint and sensitive dependence on alignment.…

Mesoscale and Nanoscale PhysicsMaterials ScienceApplied Physicsphysics.optics

Comprehensive Structure Exploration and Thermodynamics of Graphitic Heteroatom Doped Graphene Superstructures

Benedict Saunders、Lukas Hörmann、Reinhard J. Maurer2026-08-20arXiv

Graphene has been studied in detail due to its mechanical, electrical, and thermal properties. It is well documented that the introduction of dopants or defects in the lattice can be used to tune material properties for a specific application, such as in electronics, sensors, or catalysis. To design graphene with spec…

Materials Sciencecond-mat.stat-mech