{"paper":{"title":"Superfluid characteristics of the attractive Hubbard model for various lattice structures","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A.Mickiewicz University, Poland), Poznan, S. Robaszkiewicz (Institute of Physics, T. Kostyrko, W. R. Czart","submitted_at":"1997-01-08T12:44:38Z","abstract_excerpt":"We study the basic thermodynamic and electromagnetic properties of the superconductor described by the negative-$U$ Hubbard model (gap parameter $\\Delta$, critical temperature $T_c$, London penetration depth $\\lambda$, thermodynamic critical field $H_c$ and Ginzburg-Landau correlation length $\\xi_{G-L}$).The calculations are performed for square (SQ, d=2), simple cubic (SC, d=3) and face-centered cubic (FCC, d=3) lattices. We analyze the results as a function of electron density $n$ and interaction $U$ using the Hartree-Fock approximation in the weak-to-intermediate $U$ case combined with the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9701046","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":""},"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"}