cond-mat.mtrl-sci

Stacking-Selective Epitaxy of Rare-Earth Diantimonides

This paper demonstrates deterministic in-situ control over the stacking configurations of rare-earth diantimonide thin films by manipulating cation/anion ratios, growth temperature, and lanthanide selection, enabling the stabilization of a previously elusive monoclinic phase and facilitating a comparative study of its distinct electronic properties against the bulk orthorhombic structure.

Enhancing Gate Control and Mitigating Short Channel Effects in 20-50 nm Channel Length Amorphous Oxide Thin Film Transistors

This paper demonstrates that modifying source and drain electrodes to feature tapered nanospikes significantly mitigates short-channel effects in single-gate amorphous oxide thin-film transistors with 20–50 nm channel lengths, achieving performance comparable to much larger conventional devices without the process complexity of dual-gate or gate-all-around geometries.

The Effects of Cobalt Doping on the Skyrmion Hosting Material Cu$_2$OSeO$_3$

This study demonstrates that substituting Cu with Co in Cu$_2$OSeO$_3$ expands the unit cell and significantly alters magnetic properties by lowering the critical temperature, increasing critical fields, and stabilizing the skyrmion lattice over a broader temperature range.

Compatible Instability: Gauge Constraints of Elasticity Inherited by Electronic Nematic Criticality

Multi-scale Modeling of the Electro-viscoelasticity of Charged Polymers in Combined Flow and Electric Fields

This paper presents a multi-scale modeling framework that extends the Rouse model and introduces a new upper-convected electro-Maxwell continuum model to demonstrate that the upper-convected time derivative of the electric field dyadic is essential for accurately capturing the quadratic scaling of viscosity in charged polymers under combined flow and electric fields, a finding validated by coarse-grained molecular dynamics simulations.

Applicability of the cumulant expansion method for the calculation of transport properties in electron-phonon systems

This paper evaluates the accuracy of the cumulant expansion method combined with the independent-particle approximation for calculating charge mobility in electron-phonon systems, demonstrating through Peierls and Fröhlich model benchmarks that it yields reliable results for weak to moderate coupling strengths and not-too-low temperatures compared to established formalisms like Boltzmann and Migdal approximations.

Magneto-optical Kerr effect in pump-probe setups

This paper develops a computationally efficient theoretical framework based on the Dynamical Projective Operatorial Approach to calculate time-resolved magneto-optical Kerr effects in ultrafast pump-probe setups, demonstrating its ability to accurately model both short- and long-time dynamics in complex materials like germanium while enabling the experimental identification of n-photon resonances.

Atomic-scale visualization of d-wave altermagnetism

Using scanning tunneling microscopy, this study provides the first atomic-scale real-space visualization of d-wave altermagnetism in CsV2Se2O by directly imaging its characteristic symmetry-breaking electronic patterns and revealing novel long-range antiferromagnetic coupling between spin defects.

In situ and operando laboratory X-ray absorption spectroscopy at high temperature and controlled gas atmosphere with a plug-flow fixed-bed cell

This paper demonstrates the capabilities of a custom-built plug-flow fixed-bed cell for high-temperature (up to 1000°C) and high-pressure (up to 10 bar) operando laboratory X-ray absorption spectroscopy, successfully resolving oxidation state changes and catalytic activity in manganese and nickel systems during CO2 methanation within 5–15 minutes per spectrum.

Raman scattering fingerprints of the charge density wave state in one-dimensional NbTe$_4$

This study utilizes resonant Raman scattering spectroscopy to characterize the phonon modes and structural symmetries of the charge density wave state in quasi-one-dimensional NbTe$_4$, revealing a thermal hysteresis between commensurate and incommensurate phases that suggests potential applications in memory devices.