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

Optical conductivity signature of Van Hove singularity in altermagnetic topological systems

This paper demonstrates that optical and magneto-optical spectroscopy can serve as sensitive probes for detecting altermagnet-induced Van Hove singularities and Dirac gaps in two-dimensional dd-wave altermagnetic topological systems, characterized by distinct signatures in joint density of states, optical conductivities, and Faraday/Kerr rotations.

Fang Qin, Rui Chen, Xiao-Bin Qiang2026-08-24
🔬 mesoscale physics

Robust two-dimensional surface superconductivity and vortex lattice in the Weyl semimetal γγ-PtBi2_2

Using low-temperature Scanning Tunneling Microscopy, this study confirms robust two-dimensional surface superconductivity in the Weyl semimetal γ\gamma-PtBi2_2 by directly observing quantized vortices and the Josephson effect, thereby establishing macroscopic quantum phase coherence linked to Fermi arcs.

Jose Antonio Moreno, Pablo García Talavera, Edwin Herrera, Sara López Valle, Zhuoqi Li, Lin-Lin Wang, Sergey Bud'ko, Ale (…)2026-08-21
🔬 applied physics

Graphene-enabled coherent (sub-)terahertz wave detection and thickness determination

This paper presents a graphene-enabled, on-chip integrated detector-interferometer that achieves record-high responsivity and phase-sensitive (sub-)terahertz detection, enabling deep sub-wavelength thickness measurements of thin films for diverse industrial applications.

Ronny de la Bastida, Enzo Rongione, Karuppasamy Pandian Soundarapandian, Ioannis Vangelidis, Anand Nivedan, David Saleta (…)2026-08-21
🔬 mesoscale physics

Topological Engineering of a Frustrated Antiferromagnetic Triradical in Aza-Triangulene Architectures

This study demonstrates a radical reconfiguration strategy that transforms a single-radical aza-triangulene into a topologically protected, frustrated spin trimer with tunable interactions and non-interacting edge spins, effectively creating a molecular analog of a three-qubit quantum register.

Francisco Romero-Lara, Manuel Vilas-Varela, Manish Kumar, Ricardo Ortiz, Alessio Vegliante, Lucía Gómez-Rodrigo, Trisha (…)2026-08-21
🔬 mesoscale physics

Bridging atomic and mesoscopic length scales with Replica Scanning Tunneling Microscopy: Visualizing the atomic lattice of UTe2_2 and the atomic scale superconducting gap modulations of FeSe close to micron length scales

This paper introduces Replica Scanning Tunneling Microscopy (R-STM), a novel method that leverages periodic replica signals to efficiently bridge atomic and mesoscopic length scales, enabling the visualization of atomic-scale superconducting gap modulations over micron-sized areas in materials like UTe2_2 and FeSe.

Miguel Águeda Velasco, Jose D. Bermúdez-Pérez, Pablo García Talavera, Raquel Sánchez-Barquilla, Jose Antonio Moreno, Jua (…)2026-08-21
🔬 applied physics

Magneto-optical signal from Co2Mn\mathrm{Co_2Mn}-based Heusler thin films in MOKE and BLS

This study characterizes the magneto-optical response of epitaxial Co2Mn\mathrm{Co_2Mn}-based Heusler thin films using MOKE and BLS, revealing that while Co2MnSi\mathrm{Co_2MnSi} exhibits a distinct wavelength-dependent quadratic signal and strong BLS intensity at 457 nm, other compositions respond dominantly linearly, thereby guiding the optimal probing wavelength for these materials.

Anna Maria Friedel, Nicolas Fermon, Tobias Böttcher, Sébastien Petit-Watelot, Stéphane Andrieu, Philipp Pirro2026-08-21