{"paper":{"title":"Eliashberg approach to superconductivity-induced infrared anomalies in Ba0.68K0.32Fe2As2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"A. A. Golubov, A. Charnukha, A. V. Boris, B. Keimer, C. T. Lin, D. L. Sun, O. V. Dolgov, Y. Matiks","submitted_at":"2011-03-04T16:10:16Z","abstract_excerpt":"We report the full complex dielectric function of high-purity $\\textrm{Ba}_{0.68}\\textrm{K}_{0.32}\\textrm{Fe}_2\\textrm{As}_2$ single crystals with $T_{\\mathrm{c}}=38.5\\ \\textrm{K}$ determined by wide-band spectroscopic ellipsometry at temperatures $10\\leq T\\leq300\\ \\textrm{K}$. We discuss the microscopic origin of superconductivity-induced infrared optical anomalies in the framework of a multiband Eliashberg theory with two distinct superconducting gap energies $2\\Delta_{\\mathrm{A}}\\approx6\\ k_{\\mathrm{B}}T_{\\mathrm{c}}$ and $2\\Delta_{\\mathrm{B}}\\approx2.2\\ k_{\\mathrm{B}}T_{\\mathrm{c}}$. The o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.0938","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"}