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.

Unified Statistical Theory of Heat Conduction in Nonuniform Media

This paper presents a unified statistical theory of heat conduction in nonuniform media by deriving a causal spatiotemporal kernel via the Zwanzig projection-operator formalism, which microscopically encodes memory, nonlocality, and heterogeneity to seamlessly bridge classical diffusion, hydrodynamic, and quasi-ballistic transport regimes while recovering conventional coefficients as coarse-grained limits.

Yi Zeng, Jianjun Dong2026-04-15🔬 cond-mat.mes-hall

Stoichiometry-Controlled Structural Order and Tunable Antiferromagnetism in FexNbSe2\mathrm{Fe}_{x}\mathrm{NbSe_2} (0.05x0.380.05 \le x \le 0.38)

This study establishes a precise stoichiometry-structure-magnetism correlation in FexNbSe2\mathrm{Fe}_{x}\mathrm{NbSe_2}, revealing that a well-ordered 2a0×2a02a_0 \times 2a_0 Fe superlattice at x=0.25x=0.25 maximizes antiferromagnetic coupling (TN=175KT_{\mathrm{N}}=175\mathrm{K}) while deviations from this optimal ordering induce a complex sequence of magnetic phase transitions from paramagnetism to spin-glass and back.

Xiaotong Xu, Bei Jiang, Runze Wang, Zhibin Qiu, Shu Guo, Baiqing Lv, Ruidan Zhong2026-04-15🔬 cond-mat.mtrl-sci

Fabrication effects on Niobium oxidation and surface contamination in Niobium-metal bilayers using X-ray photoelectron spectroscopy

This study utilizes X-ray photoelectron spectroscopy to non-destructively evaluate 17 metal capping layers for their ability to prevent niobium oxidation and surface contamination during fabrication processes, ultimately identifying resilient candidates that improve the performance of superconducting resonators.

Tathagata Banerjee, Maciej W. Olszewski, Valla Fatemi2026-04-15🔬 cond-mat.mtrl-sci

Agentic LLM Reasoning in a Self-Driving Laboratory for Air-Sensitive Lithium Halide Spinel Conductors

This paper introduces A-Lab GPSS, an agentic AI-driven robotic platform capable of autonomously synthesizing and characterizing air-sensitive lithium halide spinel conductors under strict air-free conditions, successfully optimizing discovery strategies through abductive and inductive reasoning to significantly increase the yield of high-purity, conductive materials.

Yuxing Fei, Bernardus Rendy, Xiaochen Yang, Junhee Woo, Xu Huang, Chang Li, Shilong Wang, David Milsted, Yan Zeng, Gerbrand Ceder2026-04-15🔬 cond-mat.mtrl-sci

Gate-Reconfigurable Single- and Double-Dot Transport in Trilayer MoSe2

This paper demonstrates that trilayer MoSe2 devices with a multi-gate architecture can be electrically reconfigured to transition from single-dot to double-dot transport regimes by tuning the backgate voltage, enabling the study of non-equivalent quantum dots with tunable coupling.

Seungwoo Lee, Minjun Park, Yunsang Noh, Sung Jin An, Soyun Kim, Minseo Cho, Dohun Kim, Takashi Taniguchi, Kenji Watanabe, Minkyung Jung, Youngwook Kim2026-04-15🔬 cond-mat.mes-hall

Depth-Resolved Thermal Conductivity of HFCVD Diamond Films via Square-Pulsed Thermometry

This study utilizes square-pulsed source thermometry combined with microstructural analysis to reveal that the thermal conductivity of HFCVD diamond films on SiC substrates increases significantly from ~60 to ~200 W m⁻¹ K⁻¹ from the nucleation interface to the surface, directly correlating with grain coarsening and offering critical insights for optimizing thermal management in high-power electronics.

Kexin Zhang, Xiaosong Han, Ershuai Yin, Xin Qian, Junjun Wei, Puqing Jiang2026-04-15🔬 cond-mat.mtrl-sci

Anisotropic Thermal Characterization of Suspended and Spin-Coated Polyimide Films Using a Square-Pulsed Source Method

This study utilizes an optical Square-Pulsed Source (SPS) technique to characterize the anisotropic thermal properties of polyimide films, revealing that spin-coated films exhibit higher cross-plane thermal conductivity and lower anisotropy than suspended films due to differences in molecular orientation and substrate interactions.

Bingjiang Zhang, Dihui Wang, Tao Chen, Heng Ban, Puqing Jiang2026-04-15🔬 physics.app-ph