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 study employs a variational Gutzwiller wavefunction approach on an 8-band model to reveal that magic-angle twisted bilayer graphene exhibits a dome-shaped Fermi liquid phase separating weakly and strongly correlated superconducting regimes, with the latter characterized by a nematic, nodal-gap state stabilized by interaction-driven gap reconstruction and distinct from conventional Mott insulators.
This paper introduces a parameter-free, two-channel Allen-Dynes framework that unifies phonon and spin-fluctuation mechanisms to achieve highly accurate blind predictions of superconducting critical temperatures across five orders of magnitude, while simultaneously establishing a quantum-metric no-go result that limits the universality of geometric superfluid weight as a predictor.
Using vector magnetic-field scanning tunneling microscopy, this study provides direct spectroscopic evidence of topological surface states in the spin-triplet superconductor UTe2 by observing the selective magnetic-field suppression of in-gap states on Te sites, which aligns with theoretical predictions of Zeeman-coupled TSS.
This paper identifies a non-equilibrium state induced by current bias in a Rashba system as the microscopic origin of the Josephson diode effect, demonstrating that an in-plane magnetic field perpendicular to the current creates an asymmetric Josephson coupling whose magnitude and sign can be optimized by tuning the electrode distance.
This paper investigates tungsten silicide fluxonium qubits and resonators fabricated from quasi-two-dimensional amorphous films, revealing that energy loss is primarily driven by localized quasiparticles trapped in spatial variations of the superconducting gap, with loss increasing alongside the level of disorder.
This review examines how recent advances in materials science, device characterization, and nanofabrication are overcoming critical challenges in Josephson junction reproducibility, dissipation, and scalability to enable the transition from laboratory components to industrial-scale superconducting quantum processors.
This study reveals that while hole doping via Ti substitution in CsVTiSb preserves conventional superconductivity across two distinct domes, it fundamentally alters charge correlations by rapidly suppressing competing and superstructures in the first dome and eliminating detectable charge order entirely in the second, highlighting key differences from Sn doping on Sb sites.
This study reveals that critical current oscillations in unstructured CsV3Sb5 flakes arise from an emergent, intrinsic network of Josephson junctions characterized by quantized Shapiro steps and filamentary supercurrent flow, offering new insights into the superconducting nature of the AV3Sb5 family.
This study utilizes a superconducting 3D microwave cavity to demonstrate that bulk microcrystalline Nb2O5 exhibits significant two-level system (TLS) losses consistent with theoretical models, whereas NbO2 shows no detectable TLS signatures, suggesting that engineering niobium cavities to favor an NbO2-dominated oxide layer could substantially reduce microwave losses in superconducting quantum devices.
This study employs time-resolved optical spectroscopy to characterize the ultrafast dynamics of high-energy electronic excitations and phonon modes in bilayer La3Ni2O7, revealing distinct density-wave gaps, relaxation behaviors, and electron-phonon coupling mechanisms that provide critical insights into the material's complex gap structure and its link to high-temperature superconductivity.