828 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 critically evaluates measurement techniques in Constrained Path Quantum Monte Carlo for the Hubbard model, finding that while the standard back propagation method underestimates superconducting pair-pair correlations, the more accurate constraint release technique offers a viable alternative despite its higher computational cost and reintroduction of the sign problem.
Using Ni -edge resonant inelastic x-ray scattering, this study reveals fundamental differences in spin excitations between non-superconducting octahedral NdNiO, which exhibits a spin-density-wave ground state with dispersive paramagnons, and its superconducting square-planar counterpart NdNiO, which displays dispersionless magnetic excitations and a distinct elastic peak.
This study experimentally maps the topological band structure of three-terminal graphene Josephson junctions using tunnelling spectroscopy and magnetic flux control, revealing a transition from gapped to gapless Andreev bound states that mimics nodal-line semimetals and demonstrates the potential for engineering higher-dimensional topological phases.
This study demonstrates that the Josephson current in the quantum Hall regime is mediated by counter-propagating edge states confined to physical edges, resolving previous ambiguities regarding its mechanism through a systematic comparison of various edge configurations in graphene devices.
This paper establishes a unified framework for Euler band topology in superfluids and superconductors by demonstrating that specific three-dimensional topological phases in symmetry classes DIII and CI, including the B phase of superfluid Helium-3, possess nontrivial Euler classes that link to known invariants and predict unique phenomena such as linked nodal lines and higher-order topology.
This paper proposes a method to experimentally extract intrinsic relaxation rates (including Higgs mode decay, quasiparticle redistribution, and dephasing) in both - and -wave superconductors by analyzing their nonlinear terahertz optical response, such as third harmonic generation and time-dependent gap dynamics, under various polarization conditions and damping scenarios.
Using spatially and temporally resolved photoinduced quasiparticle dynamics in optimally doped La-Bi2201, this study reveals that while the pseudogap state exhibits intrinsic micrometer-scale inhomogeneity unlike the uniform superconducting state, their local threshold fluences for disruption closely track each other, providing direct evidence of a robust intrinsic spatial correlation between superconductivity and the pseudogap phase.
This paper demonstrates that a system of three laterally coupled minimal Kitaev chains exhibits a highly tunable nonlocal Josephson diode effect, characterized by asymmetric critical currents exceeding 50% efficiency, which arises from an imbalance between crossed Andreev reflections and electron cotunneling that breaks local time-reversal and charge-conjugation symmetries.
This paper demonstrates that hybrid systems combining -wave unconventional magnets and -wave superconductors induce an -wave-like superconducting state characterized by zero-energy flat bands, odd-frequency pairing, and tunable Josephson currents driven by the interplay between noncollinear magnetic order and singlet pairing.
This study demonstrates that ultrafast picosecond electrical pulses can bypass vortex motion and self-heating limitations to access the intrinsic depairing current density in type-II superconductors, revealing distinct microscopic dynamics in s-wave NbN and d-wave YBCO that are inaccessible to conventional DC measurements.