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 demonstrates that reducing the thickness of the kagome metal CsV3Sb5 induces a dimensional crossover from conventional bulk superconductivity to a chiral, nonreciprocal phase characterized by broken inversion and time-reversal symmetries, thereby resolving controversies over its pairing symmetry and enabling new quantum device applications.
This study employs first-principles calculations to identify zirconium, hafnium, and thorium as effective electron dopants for thin films that enhance interlayer hopping and potentially elevate superconducting , while ruling out cerium as a viable candidate.
Using nanoSQUID-on-tip magnetometry, this study provides direct evidence for the chiral nature of a zero-resistance state in electron-doped rhombohedral multilayer graphene by mapping its finite orbital magnetic moment, while also revealing how valley-resolved magnetic moment sign changes drive stochastic resistivity switching and magnetic inhomogeneity near the superconducting phase.
High-field Hall effect measurements reveal that Pr-substituted YBaCuO exhibits 2D charge order and Fermi surface reconstruction similar to pure YBCO, demonstrating that the carrier concentration in the CuO planes, rather than the specific doping mechanism or disorder level, is the primary factor governing electronic orders in these systems.
This paper theoretically establishes a comprehensive phase diagram for a three-component Ginzburg-Landau model driven by second-order Josephson couplings, identifying five distinct ground states—including time-reversal symmetry-breaking phases and a unique frustrated state with a specific Higgs-Leggett mode—to explain fractional quantum magnetic resistance oscillations in vanadium-based kagome superconductors.
The study reveals that exchange interactions with a magnetic EuOx overlayer uncover a hidden, highly anisotropic uniaxial spin texture in the superconducting 2D electron gas at KTaO3 (110) interfaces, offering new avenues to explore the interplay between magnetism and 2D superconductivity.
This paper argues that the inability of a type I superconducting body with interior holes to reach thermodynamic equilibrium during a phase transition in a magnetic field reveals a fundamental flaw in the conventional BCS theory's explanation of the Meissner effect, suggesting instead that the phenomenon requires physical elements central to the alternative theory of hole superconductivity.
This paper employs the spin-rotation-invariant Kotliar-Ruckenstein slave-boson formalism to derive an effective pairing vertex from dynamical fluctuations in the one-band Hubbard model, successfully mapping superconducting instabilities on a square lattice that qualitatively reproduce experimental cuprate observations across various doping, interaction, and temperature regimes.
Using first-principles calculations and swarm intelligence structure prediction, this study identifies monoclinic K7C as a zero-dimensional electride superconductor and orthorhombic KC as a low-pressure metallic superconductor with a maximum transition temperature of 21.4 K, thereby expanding the diversity of metal carbide superconductors under compression.
Using a defect-free unitary Fermi gas in programmable geometries, researchers discovered a paradoxical minimum in superfluid resistance during the crossover from 1D to 2D, where widening the channel increases dissipation due to a transition between phase-slip and vortex-dominated mechanisms that are simultaneously suppressed at the crossover point.