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 demonstrates that doping hybrid superconducting-metallic bilayers away from half-filling decisively favors superconducting correlations over density-density correlations, thereby enhancing superconducting stiffness and providing a viable route to experimentally validate Kivelson's bilayer proposal while offering new insights into heavy-fermion Kondo-lattice materials.
This study demonstrates that introducing magnetic Cr impurities into the kagome superconductor CsV3Sb5 induces spatially anisotropic Kondo resonances that intertwine with and enhance the superconducting gap, revealing a cooperative interplay between local magnetism and superconductivity in kagome metals.
This paper develops a microscopic tunneling approach to demonstrate how scanning tunneling spectroscopy can distinguish between different superconducting pairing scenarios in rhombohedral tetralayer graphene, including unique signatures of broken time-reversal symmetry, spatially dependent Andreev conductance for topologically distinct states, and features of competing moiré superconductivity.
Through extensive Hartree-Fock calculations, this paper demonstrates that many-body effects in twisted bilayer graphene significantly renormalize the Fermi velocity and interlayer couplings, shifting the magic angle from to and challenging the paradigm that maximum superconductivity occurs at the minimum bandwidth.
Using DFT+DMFT, this study reveals that the alternating single-layer bilayer nickelate LaNiO exhibits distinct orbital-dependent correlations where bilayer Ni ions form strongly renormalized quasiparticles while single-layer Ni ions display an orbital-selective Mott insulating state, leading to competing magnetic instabilities and a pressure-induced transition to a non-Fermi-liquid metallic phase.
This paper demonstrates a programmable superconducting diode in FeSe where the polarity and strength of the effect are dynamically controlled by using ultrafast current pulses to manipulate nematic twin boundaries, establishing a new paradigm for encoding superconducting circuit functionality into correlated electronic domain patterns.
The authors experimentally and theoretically demonstrate that negative local and nonlocal voltages in a quasi-one-dimensional aluminum normal-superconducting structure arise from quasiparticle currents at the N-S interface under magnetic fields near the critical temperature, with results consistent across both equilibrium and nonequilibrium superconducting fluctuation models.
This paper utilizes non-local conductance measurements in mesoscopic three-terminal Cu and Al NIS devices to spectroscopically probe inelastic quasiparticle relaxation and pair-breaking effects in superconducting 1-D wires, extracting energy-dependent scattering times and kinetic effects through dual-bias schemes and quasiclassical simulations.
This paper demonstrates that non-Hermitian hopping imbalances on bipartite Euclidean and hyperbolic lattices catalyze the formation of charge- and spin-density-wave orders at significantly weaker interaction strengths than in Hermitian systems by narrowing the band width while preserving the characteristic density of states scaling near zero energy.
This article generalizes previous findings on resonating valence bond ground states by analytically solving the simplest hole-doped Hubbard model on a quasi-one-dimensional tetrahedral chain and demonstrating the existence of exponentially degenerate partial RVB or dimer-monomer ground states in which each tetrahedron hosts a spin-1/2 monomer and a spin-0 dimer.