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.

$\textit{Ab initio}$ Theory of Eliminating Surface Oxides of Superconductors with Noble-Metal Encapsulation

This paper presents an *ab initio* framework that uses density functional theory and Eliashberg theory to demonstrate that noble-metal capping layers, especially when combined with a wetting/adhesion layer, can effectively passivate Nb and Ta surfaces to improve the performance of superconductors.

Cristóbal Méndez, Nathan Sitaraman, Matthias Liepe, Tomás Arias2026-02-10🔬 cond-mat

Machine-Learned Interatomic Potentials for Structural and Defect Properties of YBa $_2$ Cu $_3$ O $_{7-δ}$

This paper develops and benchmarks four machine-learned interatomic potentials (ACE, MACE, GAP, and tabGAP) trained on DFT data to enable accurate, large-scale molecular dynamics simulations of radiation-induced defects and oxygen stoichiometry in YBCO high-temperature superconductors.

Niccolò Di Eugenio, Ashley Dickson, Flyura Djurabekova, Francesco Laviano, Federico Ledda, Daniele Torsello, Erik Gallo, Mark R. Gilbert, Duc Nguyen-Manh, Antonio Trotta, Samuel T. Murphy, Davide Gamb (…)2026-02-10🔬 cond-mat

Studies of superconductivity of Fe chalcogenides in films grown by PLD technique

This paper reviews the electronic, normal, and superconducting properties of Fe chalcogenide thin films grown via Pulsed Laser Deposition (PLD), comparing them to other forms of the material while discussing strategies to enhance their superconducting transition temperature.

Atsutaka Maeda, Tomoki Kobayashi, Fuyuki Nabeshima2026-02-10🔬 cond-mat

Spin splitting, Kondo correlation and singlet-doublet quantum phase transition in a superconductor-coupled InSb nanosheet quantum dot

This paper demonstrates the realization of a superconductor-coupled InSb nanosheet quantum dot that exhibits Kondo physics and a doublet-singlet quantum phase transition, highlighting its potential for studying topological superconductivity.

Xingjun Wu, Ji-Yin Wang, Haitian Su, Han Gao, Shili Yan, Dong Pan, Jianhua Zhao, Po Zhang, H. Q. Xu2026-02-10🔬 cond-mat.mes-hall

Effect of metal encapsulation on bulk superconducting properties of niobium thin films used in qubits

This study demonstrates that metal encapsulation (such as gold capping) improves the superconducting properties of niobium thin films by reducing bulk disorder and scattering, suggesting that pair-breaking throughout the entire film, rather than just at the surface, is a significant source of decoherence in transmon qubits.

Amlan Datta, Kamal R. Joshi, Sunil Ghimire, Bicky S. Moirangthem, Makariy A. Tanatar, Mustafa Bal, Zuhawn Sung, Sabrina Garattoni, Francesco Crisa, Akshay Murthy, David A. Garcia-Wetten, Dominic P. Go (…)2026-02-10🔬 cond-mat

La $_{2-x}$ Ba $_x$ CuO $_4$ ( $x=\frac{1}{8}$ ) $μ$ SR data are inconsistent with spin stripe but consistent with spin spiral

The paper analyzes $\mu$ SR data for $\text{La}_{2-x}\text{Ba}_x\text{CuO}_4$ ( $x=1/8$ ) and concludes that the results support a coplanar spin spiral within the $\text{CuO}_2$ plane rather than a spin stripe model.

Oleg P. Sushkov2026-02-10🔬 cond-mat

Anisotropic Electronic Correlations in the Spin Density Wave State of La $_3$ Ni $_2$ O $_7$

Using polarization-resolved electronic Raman scattering, this study demonstrates that the spin-density-wave state in $\text{La}_3\text{Ni}_2\text{O}_7$ is driven by anisotropic electronic correlations with momentum-selective gap amplitudes.

Ge He, Jun Shen, Shiyu Xie, Haotian Zhang, Mengwu Huo, Jun Shu, Deyuan Hu, Xiaoxiang Zhou, Yanmin Zhang, Lei Qin, Liangxin Qiao, Hengjie Liu, Chuansheng Hu, Xijie Dong, Dengjing Wang, Jun Liu, Wei Hu (…)2026-02-10🔬 cond-mat

Intimate relationship between spin configuration in the triplet pair and superconductivity in UTe $_2$

By performing Knight-shift and ac-susceptibility measurements on $\text{UTe}_2$ , the authors demonstrate a unique relationship between the spin configuration of triplet pairs and the upper critical field, revealing characteristic features of spin-triplet superconductivity that distinguish it from spin-singlet superconductors.

Hiroki Matsumura, Yuki Takahashi, Riku Matsubayashi, Katsuki Kinjo, Shunsaku Kitagawa, Kenji Ishida, Yo Tokunaga, Hironori Sakai, Shinsaku Kambe, Motoi Kimata, Ai Nakamura, Yusei Shimizu, Yoshiya Homm (…)2026-02-10🔬 cond-mat

Josephson tunneling through a Yu-Shiba-Rusinov state: Interplay of $π$ -shifts in Josephson current and local superconducting order parameter

The paper investigates the relationship between the sign reversal ( $\pi$ -shift) in the Josephson tunneling current and the sign reversal in the local superconducting order parameter at the quantum phase transition of a magnetic impurity, finding that while both are driven by Yu-Shiba-Rusinov states, they are independent phenomena and one cannot be used to directly probe the other.

Andreas Theiler, Christian R. Ast, Annica M. Black-Schaffer2026-02-10🔬 cond-mat

Operation of a high-frequency, phase-slip qubit

This paper demonstrates the successful operation, readout, and coherent control of a high-frequency (~17 GHz) superconducting qubit based on a titanium nitride phase-slip junction, achieving lifetimes exceeding 60 μs and operation at temperatures above 300 mK, thereby establishing phase-slip junctions as a viable tool for advanced quantum information processing.

Cheeranjeev Purmessur, Kaicheung Chow, Bernard van Heck, Angela Kou2026-02-09⚛️ quant-ph

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cond-mat.supr-con

Ab initio\textit{Ab initio}Ab initio Theory of Eliminating Surface Oxides of Superconductors with Noble-Metal Encapsulation

Machine-Learned Interatomic Potentials for Structural and Defect Properties of YBa2_22​Cu3_33​O7−δ_{7-δ}7−δ​