Condensed matter physics and materials science form a dynamic partnership, exploring how the collective behavior of atoms gives rise to the unique properties of solids and liquids. This field bridges the gap between fundamental quantum mechanics and the practical engineering of everything from flexible electronics to superconductors, turning abstract theories into tangible innovations that shape our daily lives.

At Gist.Science, we process every new preprint in this category directly from arXiv to make these complex discoveries accessible to everyone. Our team generates both plain-language overviews and detailed technical summaries for each paper, ensuring that researchers, students, and curious minds alike can grasp the latest breakthroughs without getting lost in dense jargon.

Below are the latest papers in condensed matter and materials science, organized by their most recent publication dates.

Pressure-Driven Phase Evolution and Optoelectronic Properties of Lead-free Halide Perovskite Rb2_2TeBr6_6

This study investigates the high-pressure behavior of lead-free halide perovskite Rb2_2TeBr6_6, revealing a sequence of structural phase transitions from cubic to orthorhombic and monoclinic phases, coupled with pressure-induced band-gap narrowing and non-monotonic photoluminescence changes driven by competing radiative and nonradiative relaxation mechanisms.

Suvashree Mukherjee, Asish Kumar Mishra, K. A. Irshad, Boby Joseph, Goutam Dev Mukherjee2026-04-20🔬 cond-mat.mtrl-sci

Parity Anomalous Semimetal with Minimal Conductivity Induced by an In-Plane Magnetic Field

By applying an in-plane magnetic field to a magnetic topological sandwich structure, researchers successfully realized a parity anomalous semimetal phase characterized by a single unpaired gapless Dirac cone and a distinctive two-stage conductivity evolution that stabilizes half-integer quantized Hall conductivity against localization.

Binbin Wang, Jiayuan Hu, Bo Fu, Jiaqi Li, Yunchuan Kong, Kai-Zhi Bai, Shun-Qing Shen, Di Xiao2026-04-20🔬 cond-mat.mtrl-sci

High-speed, High-Resolution, Three-Dimensional Imaging of Threading Dislocations in beta-Ga2O3Ga_{2}O_{3} via Phase-Contrast Microscopy

This study establishes phase-contrast microscopy as a nondestructive, high-speed, and high-resolution laboratory technique for three-dimensional imaging of threading dislocations in beta-Ga2O3Ga_{2}O_{3}, offering superior spatial resolution and depth profiling capabilities compared to synchrotron X-ray topography.

Yukari Ishiakwa, Daiki Katsube, Yongzhao Yao, Koji Sato, Kohei Sasaki2026-04-20🔬 cond-mat.mtrl-sci

Comparing the latent features of universal machine-learning interatomic potentials

This paper systematically analyzes the distinct latent feature representations learned by universal machine-learning interatomic potentials (uMLIPs), revealing significant cross-model differences, dataset-dependent trends, persistent pre-training biases after fine-tuning, and a method for compressing atom-level features into global structure-level descriptors.

Sofiia Chorna, Davide Tisi, Cesare Malosso, Wei Bin How, Michele Ceriotti, Sanggyu Chong2026-04-20🔬 cond-mat.mtrl-sci

OXtal: An All-Atom Diffusion Model for Organic Crystal Structure Prediction

OXtal is a large-scale, 100M-parameter all-atom diffusion model that leverages a novel lattice-free training scheme and data augmentation to efficiently predict experimentally realizable 3D organic crystal structures from 2D chemical graphs, achieving state-of-the-art accuracy in both molecular conformation and packing while significantly outperforming traditional quantum-chemical methods in speed and scalability.

Emily Jin, Andrei Cristian Nica, Mikhail Galkin, Jarrid Rector-Brooks, Kin Long Kelvin Lee, Santiago Miret, Frances H. Arnold, Michael Bronstein, Avishek Joey Bose, Alexander Tong, Cheng-Hao Liu2026-04-20🔬 cond-mat.mtrl-sci

Transition from Population to Coherence-dominated Non-diffusive Thermal Transport

This paper presents a Wigner Transport Equation-based framework to model non-diffusive thermal transport driven by both phonon populations and coherences, predicting significant size-dependent thermal conductivity deviations in low-conductivity materials like CsPbBr3_3 and La2_2Zr2_2O7_7 at experimentally accessible length scales.

Laurenz Kremeyer, Bradley J. Siwick, Samuel Huberman2026-04-20🔬 cond-mat.mes-hall

Profiling THz Beams With Off-Label Use of Infrared Microbolometric Cameras

This paper demonstrates that off-label use of low-cost infrared microbolometric cameras can effectively profile terahertz beams with performance comparable to specialized, expensive THz detectors, offering a highly affordable alternative for high-fidelity beam diagnostics.

Gabriel Nagamine, Carlo Vicario, Tariq Leinen, Guy Matmon, Marco Raffa, Mattias Beck, Giacomo Scalari, Adrian L. Cavalieri, Flavio Giorgianni2026-04-20🔬 physics.app-ph

Exascale Multi-Task Graph Foundation Models for Imbalanced, Multi-Fidelity Atomistic Data

This paper presents an exascale multi-task graph foundation model built on HydraGNN and trained on over 544 million atomistic structures across 16 datasets, which achieves billion-scale materials screening in seconds and enables efficient fine-tuning for diverse downstream tasks by leveraging high-performance computing resources like Frontier.

Massimiliano Lupo Pasini, Jong Youl Choi, Kshitij Mehta, Richard Messerly, Rylie Weaver, Linda Ungerboeck, Isaac Lyngaas, Benajmin Stump, Ashwin M. Aji, Karl W. Schulz, Jorda Polo2026-04-20🔬 cond-mat.mtrl-sci