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

First principles calculations of electric-field-driven topological phase transitions in silicene, germanene and stanene

This paper presents a first-principles framework combining density-functional theory, Wannier functions, and charge center evolution to accurately determine the critical electric fields for topological phase transitions in silicene, germanene, and stanene, yielding significantly improved predictions over previous tight-binding models by fully accounting for screened electronic structures and dielectric responses.

Julián Antonio Villarreal Murúa, Pablo Roura-Bas, Javier Daniel Fuhr, Ricardo Faccio2026-09-09
🔬 mesoscale physics

Large Nernst effect in chemically derived multilayer graphene at millitesla magnetic fields

This paper demonstrates that chemically derived multilayer graphene films with thickness and carrier density fluctuations exhibit a large Nernst effect at millitesla magnetic fields, achieving transverse thermopower values up to 250 μ\muV/K and highlighting their potential for scalable thermoelectric energy generation.

Valentin Semkin, Denis Borisenko, Yana Litun, Oleg Kononenko, Dmitry Mylnikov, Alexey Bocharov, Dmitry Svintsov2026-09-09
🔬 optics

Helicity-engineered nonlinear optical responses in photo-excited topological semimetals

This paper demonstrates that the helicity and polarization orientation of bicircular pump-probe fields can be used to control and manipulate the high-harmonic generation of Weyl semimetals, revealing a sensitive probe for chiral quantum dynamics and electron-hole decoherence that enables light-driven control of topological currents.

Roshan Kumar Thakur, Prachi Venkat, Amar Bharti, Gopal Dixit2026-09-09
🔬 mesoscale physics

Self-Trapping Enabled Highly Bright Momentum-Indirect Interlayer Excitons

This paper demonstrates that coupling 2D perovskites with monolayer transition metal dichalcogenides enables highly bright momentum-indirect interlayer exciton emission with quantum yields exceeding 60%, a phenomenon driven by self-trapping induced by strong exciton-phonon coupling in the soft perovskite lattice.

Dong Yang, Zisheng Gong, Hao Wen, Yue Hu, Kaichen Jiang, Baixu Xiang, Weibo Gao, Qihua Xiong, Dehui Li2026-09-09
🔬 mesoscale physics

Mixed quantum-classical evolution in open molecular systems

This paper presents a mixed quantum-classical density-matrix equation of motion for open nonequilibrium molecular systems derived from the pseudoparticle nonequilibrium Green's function (PP-NEGF) method, highlighting its distinctions from prior formulations and demonstrating that standard fewest-switches surface hopping approximations are unreasonable when adiabatic surfaces approach each other.

Michael Galperin, Abraham Nitzan2026-09-09