Energy conservation and pressure relaxation in an extended two-temperature model for copper with an electron temperature-dependent interaction potential

This paper presents an implementation of an electron temperature-dependent interaction potential for copper within a two-temperature model molecular dynamics framework, introducing a specific algorithm to ensure energy conservation and addressing pressure relaxation effects caused by electron temperature gradients following laser irradiation.

Simon Kümmel, Johannes Roth2026-03-06🔬 cond-mat.mtrl-sci

Extended dynamical density functional theory for nonisothermal binary systems including momentum density

This paper derives a new extended dynamical density functional theory (EDDFT) for nonisothermal binary systems by incorporating momentum and energy densities via the Mori-Zwanzig-Forster projection operator technique, thereby enabling the description of both diffusive and convective dynamics while yielding exact functionals for hard spheres and correctly predicting the speed of sound.

Michael te Vrugt, Hartmut Löwen, Helmut R. Brand + 1 more2026-03-06🔬 cond-mat.mes-hall

Real-Space Plasmon Imaging Reveals Modified Electronic Structure of Gold at the Monolayer Limit

This study presents the first optical characterization of a stable, quasi-freestanding gold monolayer formed by intercalating gold between graphene and SiC, revealing that its modified electronic structure supports mid-infrared plasmon-polaritons with a Drude weight nearly double that of bulk gold, thereby establishing it as a viable two-dimensional metal for nanoscale photonics and electronics.

Andrei Bylinkin, Philippe Roelli, Naveen Shetty + 8 more2026-03-06🔬 cond-mat.mtrl-sci

Ab initio quasi-harmonic thermoelasticity, piezoelectricity, and thermoelectricity of polar solids at finite temperature and pressure: Application to wurtzite ZnO

This paper generalizes an ab initio quasi-harmonic approach to characterize the thermoelastic, piezoelectric, and pyroelectric properties of polar solids with internal degrees of freedom, demonstrating its application to wurtzite ZnO by comparing the Zero Static Internal Stress Approximation and Full Free Energy Minimization frameworks across various temperatures and pressures.

Xuejun Gong, Andrea Dal Corso2026-03-06🔬 cond-mat.mtrl-sci

Inverse-design of two-dimensional magnonic crystals via topology optimization with frequency-domain micromagnetics

This study presents an inverse-design framework combining genetic algorithms with frequency-domain micromagnetics to successfully discover unconventional two-dimensional magnonic crystal structures featuring large band gaps, thereby addressing the challenges of optimizing complex lattice geometries for targeted spin-wave properties.

Ryunosuke Nagaoka, Takahiro Yamazaki, Chiharu Mitsumata + 2 more2026-03-06🔬 cond-mat.mtrl-sci

Escaping the Hydrolysis Trap: An Agentic Workflow for Inverse Design of Durable Photocatalytic Covalent Organic Frameworks

This paper introduces "Ara," an LLM-based agentic workflow that leverages chemical priors to efficiently navigate the design space of covalent organic frameworks, successfully identifying durable and active photocatalysts for solar hydrogen production with significantly higher hit rates and faster convergence than random search or Bayesian optimization.

Iman Peivaste, Nicolas D. Boscher, Ahmed Makradi + 1 more2026-03-06🔬 cond-mat.mtrl-sci

Precise control of crystallography and magnetism in focused-ion-beam transformed iron-nickel thin films

This paper demonstrates that focused ion beam irradiation of metastable Fe78_{78}Ni22_{22} thin films induces a localized fcc-to-bcc phase transformation, enabling the precise patterning of ferromagnetic nanostructures with controllable crystallographic orientations and magnetic easy axes driven by residual lattice strain.

Jakub Holobrádek, Libor Vojáček, Ondřej Wojewoda + 2 more2026-03-06🔬 cond-mat.mes-hall

Lattice dynamics of the charge density wave compounds TaTe4_4 and NbTe4_4 and their evolution across solid solutions

This study combines first-principles calculations and Raman spectroscopy to investigate the lattice dynamics of TaTe4_4, NbTe4_4, and their solid solutions, revealing that a specific high-frequency vibrational mode dominated by transition-metal motion exhibits unique intensity redistribution rather than frequency shifts, suggesting its short-range character and relevance to the charge density wave-driven lattice distortion.

D. Silvera-Vega, G. Cardenas-Chirivi, J. A. Galvis + 2 more2026-03-06🔬 cond-mat.mtrl-sci

Pulse-duration-sensitive high harmonics and attosecond locally-chiral light from a chiral topological Weyl semimetal

This theoretical study demonstrates that pulse-duration-sensitive high harmonic generation in the chiral Weyl semimetal RhSi not only extends to higher photon energies by promoting multi-band excitations but also enables the synthesis of attosecond locally chiral light with pronounced circular dichroism, offering a pathway toward compact chiral light sources and topological electronics.

Alba de las Heras, Ofer Neufeld, Angel Rubio2026-03-06⚛️ quant-ph