{"paper":{"title":"Enhancement of superconductivity by polarization of magnetic impurities in disordered films","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"A parallel magnetic field enhances superconductivity in disordered films by polarizing magnetic impurities.","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Gleb S. Seleznev, Yakov V. Fominov","submitted_at":"2026-05-17T12:08:46Z","abstract_excerpt":"Dirty superconducting films with magnetic impurities can exhibit nontrivial behavior in a magnetic field that polarizes the impurity spins. As predicted by Kharitonov and Feigelman (KF) [JETP Lett. 82, 421 (2005)], this polarization reduces the exchange scattering rate. Consequently, a parallel magnetic field can enhance the critical temperature $T_c$ when magnetic-field pair breaking is weak, as realized for strong spin-orbit scattering and small film thickness. Recently, Llanos et al. [Nat. Phys. (2026)] observed a pronounced enhancement of $T_c$ consistent with the KF theory. The same exper"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We demonstrate theoretically the suppression of λ_L and the enhancement of H_c2^⊥ by a parallel magnetic field, in agreement with experiment.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that magnetic-field pair breaking remains weak compared with the reduction in exchange scattering, which holds only for strong spin-orbit scattering and small film thickness as stated in the abstract.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Theoretical extension of KF theory using Gor'kov diagrams predicts that parallel magnetic field suppresses London penetration depth and enhances perpendicular upper critical field in dirty films with magnetic impurities","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"A parallel magnetic field enhances superconductivity in disordered films by polarizing magnetic impurities.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"552746c9d84c349dfcddd784f0752f069c2ade6101a0be842b1043875f630a09"},"source":{"id":"2605.17408","kind":"arxiv","version":1},"verdict":{"id":"12ecfaf8-9ed1-40cd-b781-1d61b5a10471","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T22:50:25.589264Z","strongest_claim":"We demonstrate theoretically the suppression of λ_L and the enhancement of H_c2^⊥ by a parallel magnetic field, in agreement with experiment.","one_line_summary":"Theoretical extension of KF theory using Gor'kov diagrams predicts that parallel magnetic field suppresses London penetration depth and enhances perpendicular upper critical field in dirty films with magnetic impurities","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that magnetic-field pair breaking remains weak compared with the reduction in exchange scattering, which holds only for strong spin-orbit scattering and small film thickness as stated in the abstract.","pith_extraction_headline":"A parallel magnetic field enhances superconductivity in disordered films by polarizing magnetic impurities."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.17408/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"doi_compliance","ran_at":"2026-05-19T23:01:27.754790Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T23:01:19.631412Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T21:41:57.748067Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-19T21:33:23.692012Z","status":"skipped","version":"1.0.0","findings_count":0}],"snapshot_sha256":"1c242487f46c955eaf6df82090c732a488a7a1e7696e702b578097af602c002a"},"references":{"count":50,"sample":[{"doi":"","year":null,"title":"Abrikosov–Gor’kov and Kharitonov–Feigelman theories 4 III","work_id":"29100d78-963e-4e3f-a2ee-59d4c1159c96","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"Self-consistency equation 15","work_id":"b5e81bcc-624d-43e7-bf84-62aff2d43221","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"Superfluid density 15","work_id":"c5129601-1651-4879-bbbc-f8137b54975e","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"Limit of weak exchange scattering 16","work_id":"06ce059d-e270-498b-b5db-8f2c4a916523","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"Effective exchange scattering rate 16","work_id":"782c6b67-d970-4d39-bb65-8f93789f5bc2","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":50,"snapshot_sha256":"7ba288e242c4b4a8897567670f31220f3380becc26962dbb2e8e117740170e8b","internal_anchors":1},"formal_canon":{"evidence_count":2,"snapshot_sha256":"915edf08b814daa85bb296267b2797c8d34b45a407f639d6785b937a14477d8c"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}