745 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.
This paper proposes that hybrid superconductor-semiconductor nanowire Josephson junctions can be tuned via in-plane magnetic fields to achieve "sweet spots" with dominant third-order nonlinearities, enabling efficient three-wave mixing amplification in a single junction element with potential for gate-controlled frequency tuning and near-zero field operation.
This paper presents a robust optoelectronic alignment technique for superconducting nanowire single-photon detectors (SNSPDs) that utilizes the temperature-dependent resistivity change induced by optical absorption to achieve sub-micron fiber-to-nanowire coupling precision.
This study characterizes high-quality single-crystalline BiPt as a conventional, time-reversal-symmetric s-wave superconductor with a transition temperature of 1.2 K that operates in the dirty limit and exhibits pronounced anisotropy due to its hexagonal structure, serving as a crucial topologically trivial reference for Bi-based non-trivial superconductors.
This paper predicts that an accumulation of density of states near the Fermi energy can induce a superconducting order parameter larger at that peak than at the Fermi level itself, a phenomenon driven by the softening of an additional collective mode that resembles a second phase transition.
By integrating multimodal X-ray techniques with electrical and optical measurements, this study reveals that pulsed electromigration in YBaCuO microbridges induces consistent, depth-dependent oxygen vacancy redistribution and crystallographic changes, while demonstrating that optical microscopy alone is insufficient for characterizing irreversible bipolar electromigration effects.
This paper demonstrates that repulsive interactions in a quantum material featuring an X high-order Van Hove singularity can induce triplet superconductivity with a power-law dependence of the critical temperature on interaction strength, providing an upper bound for this phenomenon in SrRuO.
This paper proposes a preformed pair mechanism to explain the nonmonotonic dependence of the maximal critical temperature on the number of conducting layers in cuprates, attributing the peak to an optimal balance between pair compactness and lightness that is disrupted by rising kinetic energy in thicker multilayers.
This paper introduces a pre-patterned bottom-contact fabrication method that avoids on-flake lithography to create clean, atomically abrupt superconductor-topological material interfaces, thereby enabling significantly improved and longer-range Josephson coupling in van der Waals devices.
This study demonstrates that magnetization anomalies observed in copper-doped apatite LK-99 materials arise from glassy magnetic freezing of interacting covellite (CuS) clusters rather than superconductivity, attributing the effects to the material's inherent multiphase complexity.
This study demonstrates that combining magneto-optical imaging of magnetic flux distribution with quasiparticle spectroscopy via London penetration depth measurements provides an efficient method to correlate magnetic screening and in-gap states with internal quality factors, thereby enabling the optimization of epitaxial niobium films for superconducting qubits.