{"paper":{"title":"Fermi surface in KFe2As2 determined via de Haas-van Alphen oscillation measurements","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Akira Iyo, Akira Sato, Chul-Ho Lee, Hideto Fukazawa, Hijiri Kito, Hiroshi Eisaki, Hisatomo Harima, Kunihiro Kihou, Megumi Tomita, Motoharu Imai, Motoi Kimata, Nobuyuki Kurita, Satoshi Tsuchiya, Shinya Uji, Taichi Terashima, Taku Saito, Yoh Kohori","submitted_at":"2013-04-24T02:51:13Z","abstract_excerpt":"We have completely determined the Fermi surface in KFe$_2$As$_2$ via de Haas-van Alphen (dHvA) measurements. Fundamental frequencies $\\epsilon$, $\\alpha$, $\\zeta$, and $\\beta$ are observed in KFe$_2$As$_2$. The first one is attributed to a hole cylinder near the X point of the Brillouin zone, while the others to hole cylinders at the $\\Gamma$ point. We also observe magnetic breakdown frequencies between $\\alpha$ and $\\zeta$ and suggest a plausible explanation for them. The experimental frequencies show deviations from frequencies predicted by band structure calculations. Large effective masses"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.6469","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"}