文献arxiv2026-08-26http://creativecommons.org/publicdomain/zero/1.0/
Direct current thermo-mechanical testing (DC-TMT), based on resistive Joule heating, enables rapid heating and cooling, steep thermal gradients and simultaneous mechanical loading, making it a powerful tool for probing deformation, phase transformations, oxidation-assisted damage and creep under co…
source:arxiv: 2608.25525
文献arxiv2026-08-26http://creativecommons.org/licenses/by/4.0/
The rapid growth of generative AI has intensified the need for efficient heat dissipation in large-scale data centers. To control heat flow, thermal metamaterials with layered structures have been widely used, which impart the anisotropic properties of thermal conductivities. However, the conventio…
source:arxiv: 2608.25499
文献arxiv2026-08-26http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We demonstrate that exciton-phonon coupling in polar semiconductors is governed by a parity-controlled interference selection rule. By performing an exact multipole expansion of the excitonic form factor and validating it against numerical integration of hydrogenic envelope functions, we show that…
source:arxiv: 2608.25482
文献arxiv2026-08-26http://creativecommons.org/licenses/by/4.0/
Self-driving laboratories (SDLs) are transforming materials research by closing the loop among synthesis, characterization, data analysis and experimental decision making. Bayesian optimization (BO) is a decision engine for these loops because it can select experiments from scarce and noisy data wh…
source:arxiv: 2608.26016
文献arxiv2026-08-26http://creativecommons.org/licenses/by/4.0/
We report an electron-spin-resonance-driven linear photogalvanic effect (LPGE) in unbiased monolayer graphene and WSe_2/graphene heterostructures. Under linearly polarized 45--75 GHz radiation, the photovoltage exhibits pronounced resonant features in both Faraday and Voigt geometries. Multiple res…
source:arxiv: 2608.26026
文献arxiv2026-08-26http://creativecommons.org/licenses/by/4.0/
Large natural earthquakes are typically mediated by frictional pulse-like rupture, which features a finite slipping zone. Recently, a comprehensive two-dimensional theory of frictional slip pulses has been developed. It predicts that pulses are categorically unstable rupture modes, whose evolution…
source:arxiv: 2608.26065
文献arxiv2026-08-26http://creativecommons.org/licenses/by/4.0/
RuO$_2$ has emerged as one of the leading candidates for investigating altermagnetism. Recent quantum oscillation and angle-resolved photoemission spectroscopy measurements found the absence of altermagnetism or antiferromagnetism in pure RuO$_2$ crystals. The continuing debate over intrinsic magne…
source:arxiv: 2608.25615
文献arxiv2026-08-26http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Numerous insulators, including non-magnetic ones, have been unexpectedly found to display a finite thermal Hall signal, which has stimulated debate about its origin. Here, we report on a study of the thermal Hall effect in two diamond single crystals. The transverse thermal conductivity (kappa_xy)…
source:arxiv: 2608.25726
文献arxiv2026-08-26http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This work explores the sputtering of additively manufactured (AM) materials for use in gridded ion source applications. The first part of the paper uses 316L stainless steel as an example to demonstrate that additively manufactured material does not exhibit adverse sputtering behavior, such as high…
source:arxiv: 2608.26048
文献arxiv2026-08-26http://creativecommons.org/licenses/by/4.0/
The study of low-dimensional and anisotropic magnetism is a promising avenue for the discovery of novel quantum phenomena. Mixed-anion materials, defined by the coordination of metal cations by two or more distinct anionic species, provide an intrinsically anisotropic platform for the tuning of str…
source:arxiv: 2608.26023
文献arxiv2026-08-26http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The discovery of chiral phonons has expanded the conventional view of lattice vibrations as passive heat carriers, opening new opportunities for phononic spintronic devices. However, their realization has been largely limited to chiral crystals or to specific regions of momentum space in certain ac…
source:arxiv: 2608.25684
文献arxiv2026-08-26http://creativecommons.org/licenses/by/4.0/
Porous materials represent a versatile solution for several applications. Indeed, the recent development of a new material, named 3D-Graphene, which combines the exceptional characteristics of graphene with a three-dimensional structure, opens perspectives for applications where a high surface-to-v…
source:arxiv: 2608.26025
文献arxiv2026-08-26http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The determination of magnetic exchange interactions is essential for the quantitative description and predictive modeling of magnetic materials. In this work, we present a neighbor-shell-based screening method for selecting magnetic configurations suitable for extracting Heisenberg exchange paramet…
source:arxiv: 2608.25628
文献arxiv2026-08-26http://creativecommons.org/licenses/by/4.0/
Defect engineering can transform inert two-dimensional (2D) materials into chemically active and electronically tunable platforms by creating anchoring sites for metal atoms and clusters. Nevertheless, precise control over the formation, thermodynamic and kinetic stability, electronic structure, an…
source:arxiv: 2608.25640
文献arxiv2026-08-26http://creativecommons.org/licenses/by/4.0/
This study establishes a baseline for muonium (Mu) charge-exchange dynamics in n-type 4H-SiC through a detailed low-energy muon spin rotation (LE-uSR) investigation. Epitaxially grown and ion-implanted samples with nitrogen and phosphorus donors were characterized to assess the effect of carrier co…
source:arxiv: 2608.25702
文献arxiv2026-08-26http://creativecommons.org/licenses/by-nc-nd/4.0/
Digital and energy technologies depend on microelectromechanical and power electronic components whose performance is critically impacted by rapid, cyclic deformations. Real-time information on their operation has remained inaccessible due to the need for nanosecond and nanometer resolution in full…
source:arxiv: 2608.25980
文献arxiv2026-08-26http://creativecommons.org/licenses/by/4.0/
We investigate the stability of elastic interfaces beyond the linear regime by considering penny-shaped crack fronts propagating through toughness heterogeneities. Using fracture mechanics simulations, we drive crack fronts through arrays of obstacles with tunable toughness contrast. At low contras…
source:arxiv: 2608.25314
文献arxiv2026-08-26http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Quantum geometry, comprising of quantum metric and Berry curvature, plays a significant role in the electronic transport properties of solids. In this work, we theoretically investigate the quantum geometric properties of a Hopf-link semimetal, a distinct topological class that is charecterized by…
source:arxiv: 2608.25352
文献arxiv2026-08-26http://creativecommons.org/licenses/by/4.0/
Machine-learning interatomic potentials enable accurate and efficient atomistic simulations, but their reliability for out-of-distribution configurations far beyond the training domain remains a significant challenge. Here, to tackle this challenge, we introduce a semiparametric interatomic potenti…
source:arxiv: 2608.22933
文献arxiv2026-08-26http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The sweep rate of pulsed magnetic fields is a key factor in exploring of nonequilibrium phenomena in matter. However, the nondestructive generation of ultrafast pulsed magnetic fields is challenging because of the large time constants associated with the large inductance and capacitance of conventi…
source:arxiv: 2608.23584