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

Expansion of a free Fermi gas released from an isotropic trapping potential

This paper utilizes semi-classical techniques to derive explicit expressions for the universal late-time spatial and momentum profiles of a large number of non-interacting fermions expanding ballistically from an isotropic trap, revealing a generalized edge exponent of d/ad/a that extends the Wigner semi-circle and Thomas-Fermi laws to arbitrary power-law potentials and dimensions.

J M Luck, P L Krapivsky2026-07-21
🔬 mesoscale physics

Contrasting Γ\Gamma- and K-Valley Moiré Physics in Twisted Monolayer/Bilayer WSe2_2

This study demonstrates that displacement-field tuning in twisted monolayer/bilayer WSe2_2 enables the realization of distinct correlated phases in the KK and Γ\Gamma valleys, revealing how their contrasting orbital characters drive different quantum behaviors such as antiferromagnetism, Mott transitions, and Wigner crystallization.

Jackson Kuklin, Ning Mao, Milan Mandigo-Stoba, Edgar Elias, Tianci Song, Connor Engel, Pola Pietrzkowski, Kenji Watanabe (…)2026-07-21
🔬 mesoscale physics

Position-dependent tight-binding model for Li impurities in monolayer and bilayer graphene

This paper presents a semi-empirical, position-dependent tight-binding model for lithium impurities in monolayer and bilayer graphene, calibrated against density-functional theory to accurately reproduce electronic band structures and elucidate how localized Li-induced perturbations modify low-energy properties through symmetry breaking and intervalley mixing.

Hernan Aguirre, Hernan L. Calvo, Eduardo M. Perassi2026-07-21
🔬 mesoscale physics

Cluster Ising quantum batteries can mimic super-extensive charging power

This paper demonstrates that extended cluster-Ising quantum batteries, despite being Jordan-Wigner integrable spin chains where super-extensive charging power was previously thought impossible, exhibit robust anomalous scaling up to a thousand spins due to a corresponding super-extensive growth in stored energy, although this effect remains limited to finite system sizes.

Anna Pavone, Federico Luigi Cavagnaro, Matteo Carrega, Riccardo Grazi, Dario Ferraro, Niccolò Traverso Ziani2026-07-20
🔬 optics

Enhanced Third-Harmonic Generation in Diamond Photonic Crystal Slabs via Doubly Resonant Quasi-Bound States in the Continuum

This paper proposes and numerically demonstrates a design for a diamond photonic crystal slab that achieves enhanced third-harmonic generation by simultaneously resonating the fundamental and third-harmonic modes via a doubly resonant quasi-bound state in the continuum, resulting in high conversion efficiency and tunability across visible to deep-UV wavelengths.

Sangmin Ji, Satoshi Iwamoto, Hideki Gotoh2026-07-20