{"paper":{"title":"Superconducting gap with sign reversal between hole pockets in heavily hole-doped Ba1-xKxFe2As2","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. B. Vorontsov, A. Iyo, C. H. Lee, D. Watanabe, H. Eisaki, H. Fukazawa, K. Kihou, M. Yamashita, S. Ishida, S. Kasahara, S. Kurata, T. Ohta, T. Saito, T. Shibauchi, T. Yamashita, Y. Kawamoto, Y. Kohori, Y. Matsuda, Y. Mizukami","submitted_at":"2013-07-12T11:03:37Z","abstract_excerpt":"To gain insight into the unconventional superconductivity of Fe-pnictides with no electron pockets, we measure the thermal conductivity $\\kappa$ and penetration depth $\\lambda$ in the heavily hole-doped regime of Ba$_{1-x}$K$_x$Fe$_2$As$_2$. The residual thermal conductivity $(\\kappa/T)_{T \\rightarrow 0\\,{\\rm K}}$ and $T$-dependence of $\\lambda$ consistently indicate the fully gapped superconductivity at $x=0.76$ and the (line) nodal superconductivity at higher hole concentrations. The magnitudes of $\\frac{\\kappa}{T}\\cdot T_c|_{T \\rightarrow 0\\,{\\rm K}}$ and $\\frac{d\\lambda}{d(T/T_c)}$ at low "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.3408","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"}