文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We use femtosecond optical spectroscopy to study the evolution of coherent order-parameter dynamics in the prototypical charge-density-wave (CDW) system CeTe3 under hydrostatic pressure. The CDW transition temperature decreases from approximately 570 K at ambient pressure to near room temperature a…
source:arxiv: 2608.20057
文献arxiv2026-08-20http://creativecommons.org/licenses/by/4.0/
Oxygen dopants play a critical role in tuning the properties of cuprate superconductors, yet it is challenging to visualize them at the atomic scale. Here, we use multislice electron ptychography to directly image oxygen dopants in a Sr2CuO3+delta film. We observe oxygen dopants at interstitial sit…
source:arxiv: 2608.20199
文献arxiv2026-08-20http://creativecommons.org/licenses/by/4.0/
We present a unified theoretical framework for spin- and angle-resolved photoemission spectroscopy (SARPES) and its inverse process (SARIPES), treating both on an equal footing. The formulation is based on a response tensor that encodes the reciprocity between the two processes. We show that polari…
source:arxiv: 2608.20192
文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Heterogeneous interfaces underpin technologies from microelectronics to energy conversion and storage, but their configurational complexity precludes exhaustive first-principles screening of interface registries. Although data-driven approaches can alleviate this burden, they remain limited by spar…
source:arxiv: 2608.19933
文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The elastic modulus of porous materials is commonly described using power-law scaling relations with relative density, where the scaling exponent is often interpreted in terms of the underlying deformation mechanism. However, in highly disordered porous networks, changes in density are generally ac…
source:arxiv: 2608.20003
文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In magnetic alloys or hybrid systems formed by molecular magnets coupled to a magnetic substrate, the exchange interaction leads to fast spin dynamics after excitation. We investigate the electronic charge and spin dynamics due to the exchange interaction in a two-sublattice system with antiferroma…
source:arxiv: 2608.19698
文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Magnetoelectric (ME) phenomena in emerging material classes, such as two-dimensional van der Waals (vdW) magnets and Single-Molecule Magnets (SMMs), hold immense promise for next-generation cryogenic memory and quantum technologies. However, ME coupling in these systems predominantly manifests at l…
source:arxiv: 2608.19956
文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Functionalities of ferroelectric materials are governed by the spatial organization and coupling of polarization, strain, lattice rotation, and structural order accessible via atomically resolved scanning transmission electron microscopy (STEM) images. Quantitative interpretation of atomic-resoluti…
source:arxiv: 2608.19544
文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Atomic-scale corrugation in two-dimensional materials can modify interfacial electronic coupling, yet its influence on ultrafast carrier relaxation remains poorly established. Here, we compare image potential states (IPS) at monolayer h-BN/Ir(111) and h-BN/Pt(111) interfaces using structural charac…
source:arxiv: 2608.19946
文献arxiv2026-08-20http://creativecommons.org/licenses/by/4.0/
Ensemble nitrogen-vacancy (NV) centers in diamond enable robust vector magnetometry in unshielded environments, yet deployment remains bottlenecked by complex calibration and a reliance on external data references. Conventional statistical machine learning requires an exorbitantly large volume of t…
source:arxiv: 2608.19582
文献arxiv2026-08-20http://creativecommons.org/licenses/by/4.0/
The unexpectedly small ordered moments of CeNiAsO, a candidate for correlated $p$-wave magnet, have posed a serious challenge to the precise determination of its magnetic structure, hindering the understanding of its fundamental properties. By leveraging the high sensitivity to local internal field…
source:arxiv: 2608.19856
文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present an oscillator-driven femtosecond transient microspectroscopy system based on supercontinuum generation in a photonic crystal fiber (PCF). The system operates at 80 MHz without pulse amplification, enabling high-sensitivity measurements with a detection sensitivity better than $10^{-4}$ w…
source:arxiv: 2608.19967
文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Altermagnets (AMs) combine fully compensated magnetization with momentum-dependent spin splitting, yet intrinsic altermagnetic materials exhibiting exceptional valley characteristics remain scarce. Here, we identify monolayer titanium-based chalcogenide halides, Ti$_2X_2Y$ ($X$ = F, Cl, Br, I; $Y$…
source:arxiv: 2608.19734
文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
III-V semiconductor nanowires (NWs) are a promising platform for optoelectronic and photoelectrochemical applications, where device performance strongly depends on NW density and spatial arrangement. While ordered arrays provide precise control, their fabrication requires complex and costly lithogr…
source:arxiv: 2608.19805
文献arxiv2026-08-20http://creativecommons.org/licenses/by-nc-nd/4.0/
Lipid-coated microscale hydrogels provide confined, hydrated environments in which polymer phase behavior can differ markedly from that in bulk. Here, we investigate the crystallization pathway of poly(ethylene glycol) (PEG) encapsulated in lipid-coated agarose microgels. Surprisingly, polarized-li…
source:arxiv: 2608.19724
文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Open-porous materials exhibit pronounced compressibility, nonlinear densification, and power-law scaling of stiffness with density. In this work, we propose a thermodynamically consistent compressible neo-Hookean constitutive model for open-porous solids in which porosity serves as the primary gove…
source:arxiv: 2608.19793
文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The interplay between altermagnetism and crystalline band topology provides an intriguing avenue for realizing unconventional topological phases with distinctive spin-dependent properties. Here, based on first-principles calculations and theoretical analysis, we identify monolayer $\mathrm{Tc}_2X_2…
source:arxiv: 2608.19725
文献arxiv2026-08-20http://creativecommons.org/licenses/by/4.0/
No interatomic potential has offered universality across chemistry, near-first-principles accuracy and the speed of empirical potentials at once. Here we introduce DPA4C, an equivariant potential whose architecture and compressed CUDA operators are co-designed under deployment constraints to pursue…
source:arxiv: 2608.19041
文献arxiv2026-08-20http://creativecommons.org/licenses/by-nc-sa/4.0/
Lithium niobate and lithium tantalate see widespread use in optics and electronics, and are increasingly used for cryogenic applications. Despite their broad deployment, their optical band gap and its relation to the crystal stoichiometry are not well characterised as a function of temperature. In…
source:arxiv: 2608.18763
文献arxiv2026-08-20http://arxiv.org/licenses/nonexclusive-distrib/1.0/
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, evalua…
source:arxiv: 2608.18766