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 reveals that in nonequilibrium superconductors, a supercurrent initiated by a probe field can paradoxically grow in time during the cooling phase due to momentum-relaxing scattering of Bogoliubov quasiparticles by impurities and phonons, leading to experimental signatures such as an ultrafast Meissner effect and optical reflectivity exceeding unity.
Through systematic experiments on Josephson junctions in a true resistive environment, this study resolves the long-standing debate on the Schmid-Bulgadaev transition by confirming that the crossover from superconducting to insulating behavior occurs at the theoretically predicted quantum resistance of , even at non-zero temperatures.
Using s-wave superconducting scanning tunneling microscopy, researchers identified a topological quasiparticle surface band and its specific conductance evolution in , providing evidence for a non-chiral, odd-parity, time-reversal-invariant superconducting order parameter.
This paper reports the fabrication and successful integration of scalable, oxide-free Nb/NbN and Nb/TiN multilayer nanobridge Josephson junctions into dc SQUIDs, utilizing a geometrically defined weak link to engineer superconducting properties without relying on focused ion beam milling or tunnel barriers.
This study reports the successful growth of atomically flat, hexagonal FeTe islands on SrTiO3 substrates, where scanning tunneling spectroscopy reveals a gap-filling temperature near 40 K that suggests the potential for superconductivity in iron telluride at ambient pressure.
This study utilizes a newly developed amplifier for shot-noise scanning tunneling microscopy to demonstrate that systematically increasing junction transparency on Pb(111) drives the transition from single-electron tunneling to multiple charge transfer via Andreev reflections, thereby establishing noise-STM as a powerful platform for investigating microscopic charge transport mechanisms with atomic-scale control.
This study reports the fabrication of high-mobility SrTiO surface electron gases via hydrogen plasma exposure that exhibit suppressed superconductivity down to 10 mK and demonstrate unique electrostatic gating behaviors, including improved modulation with larger gate separations and stochastic pinch-off events at low densities, offering a promising epitaxy-free platform for quantum devices.
This paper presents simulations of a proposed device that achieves sub-nanosecond, single-shot readout of a fluxonium qubit by utilizing the transmission or reflection of a ballistic fluxon in a dual long Josephson junction circuit, offering a fast, microwave-free alternative to standard cQED methods with negligible backaction.
This paper reports the first successful demonstration of a monolithic "System-on-a-Chip" fabrication process that integrates soft X-ray transition edge sensors (TES) with microwave SQUID multiplexers on a single silicon wafer using lithographically defined interconnects to maximize focal plane fill fraction for large-format spectrometers.
Using high-resolution scanning tunneling microscopy on ultra-pure CsV3Sb5, researchers discovered a switchable chiral 2x2 pair density wave whose pairing modulations can be controlled by magnetic fields and are selectively suppressed by nonmagnetic impurities, providing definitive evidence for this exotic superconducting state.