Explore the fascinating intersection where quantum materials meet the complexity of everyday environments in the Cond-Mat — Mes-Hall section. This field investigates how tiny particles behave when caught between the orderly world of single atoms and the chaotic nature of bulk matter, revealing the hidden rules that govern electricity, magnetism, and heat in novel substances.

Gist.Science brings these cutting-edge discoveries to you directly from arXiv, the leading repository for physics preprints. We process every new submission in this category as soon as it appears, offering both straightforward, plain-language explanations and deep technical summaries to help researchers and curious minds alike grasp the latest breakthroughs without getting lost in dense equations.

Below are the most recent papers in this dynamic area of condensed matter physics, ready for you to explore.

🔬 mesoscale physics

Enabling Ab-Initio Molecular Dynamics under Bias: The CP2K+SMEAGOL Interface for Integrating Density Functional Theory and Non-Equilibrium Green Functions

This paper introduces a new interface between the CP2K electronic structure package and the SMEAGOL non-equilibrium Green's function code, enabling current-induced force calculations and demonstrating the first successful ab-initio molecular dynamics simulations of large-scale condensed phase systems under realistic bias conditions.

Christian S. Ahart, Sergey Chulkov, Clotilde S. Cucinotta2026-09-23
🔬 optics

Symmetry Analysis of the Non-Hermitian Electro-Optic Effect in Crystals

This paper employs symmetry analysis to demonstrate how crystal point group symmetry and external electric biases govern the non-Hermitian electro-optic effect driven by the Berry curvature dipole, enabling the engineering of linear dichroic optical gain and non-reciprocal responses in materials such as Weyl semimetals.

Sylvain Lannebère, Tatiana G. Rappoport, Tiago A. Morgado, Ivo Souza, Mário G. Silveirinha2026-09-23
🔬 mesoscale physics

Anomalous diffusion and singular transport from hydrodynamic recoupling

This paper demonstrates that in quasi-one-dimensional charge-neutral fluids, weak noise induces a discontinuous transition from normal to superdiffusive charge transport through a mechanism called "hydrodynamic recoupling," where sound waves re-couple to charge fluctuations, thereby invalidating zero-noise extrapolation for predicting diffusion constants.

Ewan McCulloch, Romain Vasseur, Sarang Gopalakrishnan2026-09-23
🔬 mesoscale physics

Finite-state automata for exact matrix product operators of tight-binding Hamiltonians: fractals, quasicrystals, trees and hyperbolic lattices

This paper introduces a systematic framework that utilizes finite-state automata to construct exact, logarithmically scaling matrix product operator representations of tight-binding Hamiltonians on recursively structured lattices, enabling efficient large-scale spectral calculations for diverse geometries including fractals, quasicrystals, and hyperbolic lattices.

Marta Brzezińska, Jeanne Colbois, Loïc Herviou2026-09-23
🔬 applied physics

Ultrafast Dissipative Localization of Electronic Energy in AuPt Superlattices

This study demonstrates that metallic AuPt superlattices rapidly localize absorbed optical energy within platinum atoms on a femtosecond timescale, regardless of the initial excitation wavelength, by leveraging platinum's large electronic heat capacity and rapid interfacial transport to drive coherent lattice phonons.

C. Walz, M. Mattern, J. -E. Pudell, J. Jarecki, L. Mehner, F. -C. Weber, F. Baltrusch, S. P. Zeuschner, M. Herzog, B. Ah (…)2026-09-23
🔬 mesoscale physics

Cryogenic Voltage Control of Magnetism in Silicon-Integrated \newline SrTiO3_3/Fe Heterostructures

This study demonstrates voltage-controlled magnetism in epitaxial SrTiO3_3/Fe heterostructures on silicon substrates at cryogenic temperatures, offering a power-efficient and scalable approach for integrating nanomagnetic components into next-generation classical and quantum computing circuits.

Stijn Reniers, Emile Fourneau, Andries Boelen, Xing-Jian Liu, Ekaterina Gorokh, Lukas Nulens, Vivek Kumar, Luca Ceccon (…)2026-09-23
🔬 mesoscale physics

Bias-driven circular currents in a quantum ring: Effects of electron-electron and electron-phonon interactions

This study investigates bias-driven circular charge and spin currents in a quantum ring nanojunction using a tight-binding framework with non-equilibrium Green's function formalism, revealing how electron-electron and electron-phonon interactions, mapped via Lang-Firsov transformation and treated with Hartree-Fock mean-field theory, induce novel transport features and high spin polarization.

Moumita Mondal, Santanu K. Maiti2026-09-23