{"paper":{"title":"Microscopic equivalence of the vortex-entry current and the depairing current in a superconducting thin-film strip","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"cond-mat.supr-con","authors_text":"Takayuki Kubo","submitted_at":"2026-07-13T13:04:24Z","abstract_excerpt":"The current at which vortices enter a superconducting strip is usually identified in Pearl--London theory with the disappearance of an edge barrier. This work reformulates the same question microscopically as the loss of local stability of the vortex-free current-carrying state, using the fixed-current Gibbs functional of dirty-limit Usadel theory, which is valid at arbitrary temperatures. For an ideal homogeneous thin-film strip at zero applied field, with self-field effects neglected, the stability of the vortex-free state is examined against both spatially uniform and nonuniform perturbatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.11518","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.11518/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}