{"paper":{"title":"Magnetic phase diagram of the layered superconductor Bi{2+x}Sr{2-x}CuO{6+\\delta} (Bi2201) with Tc~7 K","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A. D. Alvarenga, C. Salazar Mejia, E. Sinnecker, Hai-Hu Wen, Huiqian Luo, J. D. Dancausa, J. Mosqueira, S. Salem-Sugui Jr","submitted_at":"2012-08-13T14:54:05Z","abstract_excerpt":"We report on magnetization measurements performed on a single crystal of Bi{2+x}Sr{2-x}CuO{6+\\delta} with Tc\\sim7 K for H||c-axis. The isofield M(T) curves show a large reversible region, with a pronounced rounding effect as M approaches zero which prevents the determination of Tc(H). Deviations from the linear behavior of magnetisation near Tc(H) are studied through the asymptotic behavior of $\\sqrt{-M(T)}\\sim(T-Ta)^m$, where m is an exponent and Ta an apparent temperature transition. Values of m deviates from the expected mean field value, 1/2, suggesting the importance of phase fluctuations"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.2605","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"}