cond-mat.supr-con papers

Superconductivity is a fascinating state of matter where materials conduct electricity without any resistance, often defying our everyday expectations of how energy behaves. Researchers in this field explore the quantum mechanics behind these phenomena, seeking new materials that can operate at higher temperatures or under more practical conditions. This work holds the promise of revolutionizing everything from power grids to medical imaging devices, making the invisible world of quantum physics feel increasingly tangible and useful.

At Gist.Science, we monitor the arXiv database continuously to bring you the very latest preprints in Cond-Mat — Supr-Con as soon as they are posted. For every new submission, we generate both detailed technical summaries for experts and clear, plain-language explanations for curious readers, ensuring that cutting-edge discoveries are accessible to everyone regardless of their background. Below are the latest papers in this dynamic field, ready for you to explore.

Quantum fluctuation-induced first-order breaking of time-reversal symmetry in unconventional superconductors

Using the hole-doped square-lattice $t$ - $J$ model, this study demonstrates that quantum phase fluctuations fundamentally alter the mean-field picture of time-reversal symmetry breaking in unconventional superconductors by inducing a first-order transition and phase separation between symmetric and asymmetric phases, thereby significantly narrowing the stability region of the exotic $s+id$ state.

Yin Shi2026-04-03🔬 cond-mat

Fit-Free Optical Determination of Electronic Thermalization Time in Nematic Iron-Based Superconductors

This paper introduces a fit-free nematic response function model that combines with the two-temperature model to directly extract and quantify the anisotropic electronic thermalization timescales (110–230 fs) in nematic iron-based superconductors, offering a powerful alternative to complex data-fitting procedures.

Alexander Bartenev, Roman Kolodka, Ki-Tae Eom, Jong-Hoon Kang, Adrian Rua-Melendez, Jason Kawasaki, Chang-Beom Eom, Armando Rua, Sergiy Lysenko2026-04-03🔬 cond-mat

Electronic-Structure Correlations Governing Superconductivity in Nb-Based High-Entropy Alloys

This study establishes that the superconducting properties of niobium-based high-entropy alloys are primarily governed by the position of the niobium d-band relative to the Fermi level, with lattice distortion acting as a secondary modifier, thereby providing a mechanism-informed design strategy for optimizing these materials.

Md Sabbir Hossen Bijoy, Vladislav Korostelev, Deva Prasaad Neelakandan, Harshil Goyal, Steven E. Porterfield, Youming Xu, Shuchen Li, Xi Chen, Mark Adams, Barton C. Prorok, Konstantin Klyukin, Chanho (…)2026-04-03🔬 cond-mat

Chiral Superconductivity in Periodically Driven Altermagnet/Superconductor Heterostructures

This paper proposes that elliptically polarized light can drive an altermagnet-superconductor heterostructure into Floquet chiral topological superconducting phases with tunable Chern numbers up to four, leveraging the interplay between altermagnetism, mixed pairing symmetries, and periodic driving.

Xiaolin Wan, Zheng Qin, Fangyang Zhan, Junjie Zeng, Dong-Hui Xu, Rui Wang2026-04-03🔬 cond-mat

Dissecting superconductivity in the Ruddlesden-Popper nickelates: The role of electron correlation and interlayer magnetic exchange

Using resonant inelastic x-ray scattering, this study reveals that the significantly lower superconducting transition temperature in trilayer $\mathrm{La_4Ni_3O_{10}}$ compared to bilayer $\mathrm{La_3Ni_2O_7}$ arises from weaker electronic correlations and a substantially reduced interlayer magnetic exchange interaction.

Xiaoyang Chen, Zezhong Li, Mei Xie, Deyuan Hu, Yiu-Fung Chiu, Stefano Agrestini, Wenliang Zhang, Yi Lu, Meng Wang, Mirian Garcia-Fernandez, Donglai Feng, Ke-Jin Zhou2026-04-03🔬 cond-mat

Strong nonlinear thermoelectricity generation and close-to-Carnot efficient heat engines in Superconductor-Insulator-2D electron gas junctions

The paper demonstrates that Superconductor-Insulator-2D electron gas tunnel junctions can generate strong nonlinear thermoelectricity and achieve near-Carnot efficiency ( $\eta=0.96\eta_C$ ) through a novel mechanism, offering superior performance and easier fabrication compared to analogous solid-state devices.

Leonardo Lucchesi, Federico Paolucci2026-04-03🔬 cond-mat.mes-hall

Effective Field Theory for Superconducting Phase Transitions

This paper employs the Schwinger-Keldysh formalism to construct a symmetry-constrained effective field theory for s-wave superconducting phase transitions that reproduces Ginzburg-Landau equations, describes overdamped Higgs and absorbed phase modes near the critical point, and validates its structure and coefficients using holographic techniques to reveal complex relaxation dynamics characteristic of strongly coupled systems.

Yanyan Bu, Zexin Yang2026-04-03⚛️ hep-th

Jahn-Teller distortion on strained La $_3$ Ni $_2$ O $_7$ thin films

This study demonstrates that biaxial compressive strain in La $_3$ Ni $_2$ O $_7$ thin films primarily enhances Jahn-Teller splitting by elongating outer apical Ni-O bonds, identifying this distortion as the key microscopic parameter for optimizing superconductivity in bilayer nickelates.

Yuxin Wang, Zhan Wang, Fu-Chun Zhang, Kun Jiang2026-04-03🔬 cond-mat

Chiral skyrmionic superconductivity from doping a Chern Ferromagnet

This paper demonstrates that hole-doping a Chern ferromagnet can stabilize chiral $f$ -wave superconductivity through the formation and condensation of skyrmionic Cooper pairs, offering a novel microscopic mechanism potentially relevant to superconductivity observed in MoTe $_2$ moiré superlattices.

Miguel Gonçalves, Kun Yang, Shi-Zeng Lin2026-04-03🔬 cond-mat

Upper critical in-plane magnetic field in quasi-2D layered superconductors

This paper presents an analytical framework to model the upper critical in-plane magnetic field in quasi-2D layered superconductors, which, when applied to recent bilayer graphene experiments, reveals a discrepancy in spin-orbit parameters that is likely resolved by an enhanced Landé g-factor.

Huiyang Ma, Dmitry V. Chichinadze, Cyprian Lewandowski2026-04-02🔬 cond-mat.mes-hall

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