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.

🔬 materials science

Effective Ionic Valence and Local Magnetic Moment in Kagome Superconductors

This paper proposes that kagome superconductors AV3_3Sb5_5 and ATi3_3Bi5_5 possess 2+ valence ions with similar carrier densities but distinct quantum fluctuating magnetic moments, a finding experimentally confirmed by the enhanced magnetic susceptibility observed upon introducing nonmagnetic Sn impurities that relieve geometric frustration.

Ruoshi Jiang, Zi-Jian Lang, Yuzki Oey, Andrea Capa Salinas, Stephen D. Wilson, Yongwei Li, Ilya Shipulin, Yiwen Zhang, D (…)2026-09-11
🔬 materials science

Magnetoconductance evolution across the topological-trivial phase transition in Inx(Bi0.3Sb0.7)2−xTe3{In_{x}}({Bi_{0.3}}{Sb_{0.7}})_{2-x}{Te_3} thin films

This study systematically maps the magnetoconductance evolution in Inx(Bi0.3Sb0.7)2−xTe3{\rm In}_{x}({\rm Bi}_{0.3}{\rm Sb}_{0.7})_{2-x}{\rm Te}_3 thin films across a topological-to-trivial phase transition and a subsequent disorder-driven localization crossover, revealing a distinct shift from weak antilocalization to positive orbital magnetoconductance governed by incoherent hopping mechanisms.

Sambhu G Nath, Subhadip Manna, Kanav Sharma, Amar Verma, Ritam Banerjee, R K Gopal, Chiranjib Mitra2026-09-10
🔬 materials science

A Structural Map of Potential Correlated Electron Molecular Orbital Materials

This paper introduces a comprehensive framework, including classification criteria, a database, and high-throughput screening tools, to systematically identify and analyze correlated electron molecular orbital materials, revealing that their emergent electronic states arise from a complex interplay of electron count, symmetry, frustration, and correlation strength rather than cluster motifs alone.

Md. Rajbanul Akhond, Alexandru B. Georgescu2026-09-10
🔬 materials science

Quantum-classical correspondence for spins at finite temperatures: theory and applications

This paper establishes a rigorous quantum-to-classical mapping for interacting spin systems at finite temperatures, demonstrating that classical Monte Carlo simulations with an effective spin length of S(S+1)\sqrt{S(S+1)} accurately predict magnetic transition temperatures and susceptibility in real materials by incorporating leading-order quantum corrections.

A. El Mendili, M. E. Zhitomirsky2026-09-10
🔬 materials science

The Double Measurement Confound in Agent Benchmarks: De-Scaffolding, Ground-Truth Scoring, and Reliability Beyond the Mean

This paper identifies a "double measurement confound" in LLM agent benchmarks where fixed scaffolds and flawed scorers obscure true model capability, and proposes a measurement-theoretic framework with an audit-and-repair protocol to transfer execution control to models, implement ground-truth scoring, and report reliability metrics beyond the mean.

Yonghong Zhang, Shadi Motaali, Vu Phong Dinh, Avin Piroutiniya, Jorge E. López de Vergara, Luis de Pedro, Ricardo Correi (…)2026-09-10
🔬 materials science

Phase stability and mechanical response of Ag-interlayered Al/Cu resistance spot-welded joints

This study establishes a comprehensive computational and experimental framework demonstrating that introducing an Ag interlayer in Al/Cu resistance spot welding suppresses brittle Al-Cu intermetallic compounds in favor of ductile Al-Ag solid solutions, thereby significantly enhancing the joint's mechanical strength and providing a predictive model for rational interlayer selection.

Shuang Lin, Kyubok Lee, Jiahui Ye, Ho Kwon, Shun-Li Shang, Allison M. Beesea, Xun Liu, Jingjing Li, Zi-Kui Liu2026-09-10
🔬 condensed matter

Origin of Flat Bands and Role of Electron Correlation in Lutetium Hydrides

By combining advanced theoretical methods, this study reveals that anti-site hydrogen defects in lutetium hydrides are responsible for the experimentally observed flat bands and low-energy optical features, while establishing that hydrogen orbital filling, rather than interaction magnitude, is the fundamental principle governing the material's weak correlation strength and electronic behavior.

Anmol Lamichhane, Adam Denchfield, Hyeondeok Shin, Panchapakesan Ganesh, Russell J. Hemley, Hyowon Park2026-09-10
🔬 materials science

High-pressure elastic properties of GeO2 polymorphs up to 120 GPa

Using density functional theory and Landau free-energy expansion, this study systematically investigates the phase stability and pressure-dependent elastic properties of four GeO2 polymorphs up to 120 GPa, revealing a Landau-type second-order rutile-to-CaCl2 transition at 14.6 GPa characterized by significant elastic softening and a peak in wave anisotropy, followed by distinct anisotropy behaviors in the higher-pressure alpha-PbO2 and pyrite phases.

Gulshan Kumar, Sumit Ghosh, Sharad Babu Pillai, Rajkrishna Dutta2026-09-10
🔬 materials science

Light-Driven Ultrafast Control of Time-Reversal Symmetry in SrTiO3

This study demonstrates that off-resonant, elliptically polarized THz pulses can induce ultrafast time-reversal symmetry breaking and a transient reduction to tetragonal magnetic symmetry in nonmagnetic cubic SrTiO3, as evidenced by emergent second-harmonic generation circular dichroism scaling with the pulse's angular momentum.

In Hyeok Choi, Sergei Urazhdin, Shivasheesh Varshney, Seung Gyo Jeong, Bharat Jalan, Keith A. Nelson2026-09-10