{"paper":{"title":"Anomalously Sharp Superconducting Transitions in Overdoped $La_{2-x}Sr_{x}CuO_{4}$ Films","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.supr-con","authors_text":"A. Tsukada, I. Hetel, M. Naito, T.R. Lemberger","submitted_at":"2010-08-16T19:33:42Z","abstract_excerpt":"We present measurements of $ab$-plane resistivity $\\rho_{ab}(T)$ and superfluid density [$\\propto \\lambda^{-2}$, $\\lambda$ = magnetic penetration depth] in $La_{2-x}Sr_{x}CuO_{4}$ films. As Sr concentration $x$ exceeds about 0.22, the superconducting transition sharpens dramatically, becoming as narrow as 200 mK near the super-to-normal metal quantum critical point. At the same time, $\\rho_{ab}(T)$, $\\lambda^{-2}(T)$, and transition temperature $T_c$ decrease, and upward curvature develops in $\\lambda^{-2}(T)$. Given the sharp transitions, we interpret these results in the context of a homogen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.2744","kind":"arxiv","version":2},"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"}