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

Giant bulk photovoltaic effect driven by interfacial symmetry breaking in MoS2/Ta2NiSe5 heterostructures

This study demonstrates a giant bulk photovoltaic effect in MoS2/Ta2NiSe5 van der Waals heterostructures driven by interfacial symmetry breaking and spontaneous charge transfer, achieving a record zero-bias photocurrent density of 247 A/cm² through a minimalist orthogonal device geometry that enables the clear separation and optimization of competing photophysical mechanisms.

Jianwen Ma, Pengliang Leng, Lei Peng, Congming Hao, Xianghao Meng, Jiaqi Liu, Yang Gan, Min Luo, Zifan Zhang, Jiaming Gu (…)2026-08-28
🔬 mesoscale physics

Terahertz anomalous Hall effect in magnetic Weyl semimetal Co3_3Sn2_2S2_2

This paper presents a systematic terahertz spectroscopy study combined with semianalytical modeling to explain the intrinsic gyrotropic optical response and giant anomalous Hall effect in the magnetic Weyl semimetal Co3_3Sn2_2S2_2 as arising from the momentum-space separation of its Weyl nodes, while quantitatively constraining the material's physical parameters.

Ashutosh Singh, Hongjing Xu, Xielin Wang, Kohei Fujiwara, Atsushi Tsukazaki, Shengxi Huang, Andrey Baydin, Junichiro Kon (…)2026-08-28
🔬 mesoscale physics

Trapping e/4e/4 quasiparticles in bilayer graphene

This study demonstrates the successful trapping and measurement of e/4e/4 quasiparticles in even-denominator fractional quantum Hall states of bilayer graphene using a gate-defined antidot, providing strong evidence for non-Abelian ground states and a critical step toward topological quantum computation.

Mario Di Luca, Emily Hajigeorgiou, Ning Ma, Alexandra Waldherr, Kenji Watanabe, Takashi Taniguchi, Mitali Banerjee2026-08-28
🔬 mesoscale physics

Observation of Quantized Charge Accumulation in a Quantum Anomalous Hall System

This paper experimentally validates a capacitive method that directly detects quantized charge accumulation in a quantum anomalous Hall system, confirming the intrinsic relationship between Hall conductance and surface charge density under ultra-low dissipation conditions.

Yuanze Li (State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing (…)2026-08-27
🔬 mesoscale physics

A Simple Regularization of the Smooth Quantum Hydrodynamic Model

This paper proposes a simple regularization of the smooth quantum hydrodynamic model by substituting the electron density derivative with a classical Boltzmann distribution to eliminate unstable modes, thereby enabling time-dependent simulations of resonant tunneling diodes that accurately reproduce realistic negative differential resistance and hysteresis in agreement with fully quantum mechanical results.

Carl L. Gardner2026-08-27
🔬 condensed matter

Quantum spin Hall crystals at fractional filling of twisted MoTe2_2

This paper predicts and classifies interaction-driven quantum spin Hall crystals (QSHCs) emerging at fractional fillings in twisted MoTe2_2, providing specific evidence for a 9-fold quasi-degenerate 3×3\sqrt{3}\times\sqrt{3} charge-ordered state at ν=−8/3\nu = -8/3 near a 5∘5^\circ twist that exhibits distinct topological phases protected by time-reversal or valley symmetry.

Xiaoyang Shen, Raul Perea-Causin, Christopher Ekman, Jiong-Hao Wang, Hui Liu, Emil J. Bergholtz2026-08-27