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.

Pairing around a Single Dirac Point: A Unifying View of Kohn-Luttinger Superconductivity in Chern Bands, Quarter Metals, and Topological Surface States

This paper demonstrates that spontaneous superconductivity in doped single Dirac cones driven by repulsive interactions arises exclusively from higher-order dispersion corrections required by lattice constraints, leading to distinct topological pairing symmetries—such as $p$ -wave in Chern bands and anisotropic $d$ - or $p$ -wave states in topological surface states—that reflect the specific mechanism used to circumvent the no-go theorem for single Dirac cones.

Omid Tavakol, Thomas Scaffidi2026-04-09🔬 cond-mat

Interplay between Superconductivity and Altermagnetism in Disordered Materials and Heterostructures

This paper utilizes quantum kinetic and quasiclassical theories to demonstrate that the interplay between superconductivity and altermagnetism in disordered systems generates competing magnetoelectric effects and proximity-induced magnetization, leading to novel phenomena such as spin-texture induction and $0$- $\pi$ transitions in Josephson junctions.

Rodrigo de las Heras, Tim Kokkeler, Stefan Ilic, Ilya V. Tokatly, F. Sebastian Bergeret2026-04-09🔬 cond-mat.mes-hall

Turning non-superconducting elements into superconductors by quantum confinement and proximity

This paper presents a unified theoretical framework demonstrating that while quantum confinement alone can induce superconductivity in bulk non-superconducting metals only within extremely narrow, sub-nanometer thickness windows, combining confinement with proximity effects in heterostructures can substantially enhance critical temperatures even in materials that are non-superconducting in bulk form.

Giovanni A. Ummarino, Alessio Zaccone2026-04-09🔬 physics.app-ph

Directional Andreev-Reflection Signatures of Inter-Orbital Pairing in Sr $_2$ RuO $_4$

This paper reports a reversal of the expected directional Andreev-reflection signatures in Sr $_2$ RuO $_4$ , where pronounced in-gap bound states appear on out-of-plane surfaces rather than in-plane edges, a phenomenon attributed to inter-orbital pairing that offers new constraints on the material's superconducting order parameter.

G. Csire, Y. Fukaya, M. Cuoco, Y. Tanaka, R. K. Kremer, A. S. Gibbs, G. A. Ummarino, D. Daghero, R. S. Gonnelli2026-04-09🔬 cond-mat.mes-hall

Nonlinear phononics in LaFeAsO: Optical control of the crystal structure toward possible enhancement of superconductivity

This study demonstrates through first-principles simulations that selectively exciting infrared-active phonon modes in the iron-based superconductor LaFeAsO via nonlinear phononics can tune the anion height toward its ideal value, suggesting a viable pathway for light-induced structural control to enhance superconductivity.

Shu Kamiyama, Tatsuya Kaneko, Kazuhiko Kuroki, Masayuki Ochi2026-04-09🔬 physics.optics

Influence of the Ortho-II superstructure in the YBa $_2$ Cu $_3$ O $_{7-\delta}$ Orthorhombic phase after annealing

This study demonstrates that the oxygen ordering pathway in YBa $_2$ Cu $_3$ O $_{7-\delta}$ , specifically whether the material passes through the Ortho-II superstructure during low-temperature isothermal oxygenation, leaves a lasting structural fingerprint that results in distinct final configurations and X-ray diffractograms in the Orthorhombic phase.

Roberto F. Luccas, Lorenzo Gallo, Cesar E. Sobrero, Jorge A. Malarría2026-04-09🔬 physics.app-ph

Perpendicular electric field induced $s^\pm$ -wave to $d$ -wave superconducting transition in thin film La $_3$ Ni $_2$ O $_7$

Using dynamical cluster quantum Monte Carlo calculations on a two-orbital bilayer Hubbard model, this study demonstrates that a perpendicular electric field induces a superconducting transition from $s^\pm$ -wave to $d$ -wave symmetry in thin-film La $_3$ Ni $_2$ O $_7$ by suppressing $d_{z^2}$ -orbital pairing and enhancing $d_{x^2-y^2}$ -orbital contributions, with the resulting $d$ -wave pairing exhibiting a dome-like dependence on field strength.

Yongping Wei, Xun Liu, Fan Yang, Mi Jiang2026-04-09🔬 cond-mat

Evidence for a Dual-Source Mechanism of THz Radiation from Rectangular Mesas of Single Crystalline \bm{ $\mathrm{Bi_2Sr_2CaCu_2O_{8+δ}}$ } Intrinsic Josephson Junctions

This study provides experimental evidence for a dual-source mechanism of THz radiation from rectangular mesas of single-crystalline $\mathrm{Bi_2Sr_2CaCu_2O_{8+Î´}}$ intrinsic Josephson junctions, demonstrating that uniform and non-uniform $ac$-Josephson currents act as electric and magnetic current sources, respectively, with the latter synchronizing with cavity modes to generate radiation at integral harmonics.

Kazuo Kadowaki, Manabu Tsujimoto, Kazuhiro Yamaki, Takashi Yamamoto, Takanari Kashiwagi, Hidetoshi Minami, Masashi Tachiki, Richard A. Klemm2026-04-08🔬 physics

Geometrical Resonance Conditions for THz Radiation from the Intrinsic Josephson Junctions in Bi2Sr2CaCu2O8+d

This study demonstrates that subterahertz radiation emitted from various shaped mesas of intrinsic Josephson junctions in Bi2Sr2CaCu2O8+d arises from a dual-source mechanism where the ac Josephson effect, dominant in generating integer harmonics, synchronizes with specific mesa cavity resonance modes.

Manabu Tsujimoto, Kazuhiro Yamaki, Kota Deguchi, Takashi Yamamoto, Takanari Kashiwagi, Hidetoshi Minami, Masashi Tachiki, Kazuo Kadowaki, Richard A. Klemm2026-04-08🔬 physics

Broadly Tunable Sub-terahertz Emission from Internal Branches of the Current-voltage Characteristics of Superconducting Bi2Sr2CaCu2O8+d Single Crystals

This paper demonstrates that applying a DC voltage to a stack of intrinsic Josephson junctions in a Bi2Sr2CaCu2O8+d single crystal generates continuous, coherent, and broadly tunable sub-terahertz radiation, while proposing the use of an external cavity to amplify this emission into a high-power source.

Manabu Tsujimoto, Takashi Yamamoto, Kaveh Delfanazari, Ryo Nakayama, Takeo Kitamura, Masashi Sawamura, Takanari Kashiwagi, Hidetoshi Minami, Masashi Tachiki, Kazuo Kadowaki, Richard A. Klemm2026-04-08🔬 physics

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