815 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 presents a theory for ballistic S/F/S junctions with precessing magnetization, demonstrating that the resulting non-equilibrium distribution of Andreev bound states generates long-range equal-spin superconducting correlations and a non-sinusoidal Josephson current, enabling a fully polarized half-metal junction to switch from an insulating "off" state to a conducting "on" state.
This paper retracts the authors' previous claim of ideal diamagnetism in graphene-n-heptane-permalloy systems, attributing the observed signals instead to magnetic field redistribution artifacts caused by permalloy inhomogeneities and experimental geometry.
This paper demonstrates a rapid, maskless fabrication method for superconducting terahertz Josephson plasma emitters using direct UV laser micromachining of Bi-2212 single crystals, which preserves internal junction stacks to enable stable, elliptically polarized radiation while offering a versatile and low-cost alternative to traditional techniques.
This study utilizes wide-field magnetic imaging with diamond NV centers to quantitatively capture the real-time rearrangement of vortices in an NbN thin film driven by the interplay of local laser heating and shielding currents, offering new insights into vortex dynamics for superconducting device applications.
By stabilizing superconducting bilayer nickelate thin films to enable direct spectroscopic probing, this study reveals that superconductivity emerges from coherent interlayer -- hybridization that suppresses static spin order, while the in-plane states provide the itinerant backbone.
This paper introduces a "type II" Lifshitz invariant unique to time-reversal symmetry-broken superconductors, which enables the Higgs mode to become optically active and provides a comprehensive group-theoretical classification and numerical verification of this phenomenon.
This paper presents a sign-problem-free model and unbiased quantum Monte Carlo simulations demonstrating the emergence of a robust, high-temperature charge-4e superconducting phase in two-dimensional SU(4) interacting fermions, characterized by a Berezinskii-Kosterlitz-Thouless transition and a pseudogap regime.
This paper demonstrates that including quantum fluctuations in the theoretical description of -wave superconductors shifts the Higgs mode's frequency below the superconducting gap, creating a new undamped pole that results in sharper experimental signatures in Third Harmonic Generation and Raman scattering while explaining potential discrepancies in gap measurements across different techniques.
This paper demonstrates that in altermagnetic superconductors, the coupling between the external magnetic field and the Néel vector induces an effective mass anisotropy that transforms circular Abrikosov vortices into field-direction-dependent elliptical vortices, resulting in nonreciprocal magnetization curves due to distinct vortex-vortex interaction energies.
This paper presents an improved analytical model for metallic tunnel junctions that offers greater accuracy than the traditional Simmons model by deriving new formulas for tunneling current and conductance at finite voltage and temperature, which align more closely with the Wentzel-Kramers-Brillouin approximation and demonstrate significant practical differences when fitted to experimental data.