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.

Charge Density Wave Driven Topological Phase Transition in Vortices

This paper proposes a theoretical framework demonstrating that the phase of a stripe charge density wave can control the topological state of a magnetic vortex, particularly through an inversion-symmetry-breaking mechanism that induces a robust transition by enabling spin-triplet pairing.

Zhenhua Zhu, Ziqiang Wang, Dong E. Liu2026-04-20🔬 cond-mat.mtrl-sci

Laser induced surface nitriding of niobium: phase evolution and superconducting behaviour

This study investigates laser-induced surface nitriding of niobium under controlled nitrogen atmospheres, establishing a processing map to selectively form $\beta$ -Nb $_2$ N or $\gamma$ -Nb $_4$ N $_{3\pm x}$ phases that significantly enhance either surface microhardness or the superconducting critical temperature up to 15 K.

J. Frechilla, A. Frechilla, G. F. de la Fuente, A. Larrea, L. A. Angurel, E. Martínez2026-04-20🔬 cond-mat.mtrl-sci

Fluctuating Pair Density Wave in Finite-temperature Phase Diagram of the $t$ - $t^\prime$ Hubbard Model

Using state-of-the-art thermal tensor network methods, this study reveals that while the electron-doped $t$ - $t^\prime$ Hubbard model supports a $d$ -wave superconducting regime, the hole-doped side is characterized by a finite-temperature phase dominated by fluctuating pair-density-wave states with inter-arc pairing rather than robust superconductivity.

Qiaoyi Li, Yang Qi, Wei Li2026-04-20🔬 cond-mat

Obstructed Cooper pairs in flat band systems - weakly-coherent superfluids and exact spin liquids

This paper demonstrates that in line-graph lattices with strong attractive interactions, doped charges form obstructed Cooper pairs whose motion is frustrated by destructive interference, causing the pair kinetic energy to vanish and resulting in a disorder-free, interaction-driven localization that yields an exact spin liquid ground state with topological order.

Tamaghna Hazra, Nishchhal Verma, Jörg Schmalian2026-04-17🔬 cond-mat.mtrl-sci

Pseudo-spin-polarized topological superconductivity in kagome RbV $_3$ Sb $_5$

This paper proposes that RbV $_3$ Sb $_5$ is a nodal topological superconductor with pseudo-spin-polarized Cooper pairs, where the resulting ferromagnetic-like domains explain the experimentally observed magnetic hysteresis and the presence of Majorana flat band modes at the boundary.

Xilin Feng, Zi-Ting Sun, Ben-Chuan Lin, K. T. Law2026-04-17🔬 cond-mat

Skyrmion-vortex pairing and vortex-drag induced Skyrmion Hall effect

This paper proposes a theoretical framework for a two-dimensional ferromagnetic superconductor where an attractive interaction between Skyrmions and vortices leads to the formation of bound pairs, resulting in a novel "vortex-drag induced Skyrmion Hall effect" where a Magnus force on the vortex drives a transverse drift of the Skyrmion.

Shantonu Mukherjee2026-04-17⚛️ hep-th

Superconducting Proximity Effect in an SSH-Superconductor Junction

This paper investigates the superconducting proximity effect in a junction between a superconductor and a one-dimensional SSH topological insulator using functional integration, revealing that while bulk superconductors stabilize chain states within the superconducting gap, lower-dimensional superconductors induce finite temperature-dependent lifetimes due to phase fluctuations.

I. A. Belkovich, A. A. Radkevich2026-04-17🔬 cond-mat

Quantum Charge-4e Superconductivity and Deconfined Pseudocriticality in the Attractive SU(4) Hubbard Model

Using large-scale quantum Monte Carlo simulations, this paper establishes the existence of a zero-temperature charge-4e superconducting phase in the attractive SU(4) Hubbard model and demonstrates that the transition from charge-2e to charge-4e superconductivity is governed by an unconventional deconfined quantum pseudocriticality described by an Sp(4) gauge-Higgs theory.

Zhou-Quan Wan, Huan Jiang, Xuan Zou, Shiwei Zhang, Shao-Kai Jian2026-04-17🔬 cond-mat

Topologically non-trivial gap function and topology-induced time-reversal symmetry breaking in a superconductor with singular dynamical interaction

This paper demonstrates that adding a repulsive Hubbard-type interaction with a finite cutoff to a model with singular dynamical interactions can stabilize a topologically non-trivial superconducting state, which emerges from the topologically trivial ground state via an intermediate phase characterized by topology-induced time-reversal symmetry breaking.

Yue Yu, Andrey V. Chubukov2026-04-17🔬 cond-mat

$\mu$ SR study of time-reversal symmetry constraints and bulk superfluid response in Li $_{0.95}$ FeAs

This study establishes Li $_{0.95}$ FeAs as a bulk multigap superconductor without time-reversal symmetry breaking, where $\mu$ SR measurements reveal a dominant superfluid response from intermediate and small gap bands while the largest gap band contributes negligibly to the total superfluid density.

Rustem Khasanov, Hubertus Luetkens, Nikolai D. Zhigadlo2026-04-17🔬 cond-mat

← Previous Next →

cond-mat.supr-con