Evolution of Fermi surface and superconducting gap by electron doping in Ba(Fe,Co)2As2

T. Sudayama*, Y. Wakisaka, K. Takubo, R. Morinaga, T. J. Sato, M. Arita, H. Namatame, M. Taniguchi, T. Mizokawa

*この研究の対応する著者

研究成果: Article査読

抄録

We report on an electronic structural study of BaFe1.7Co 0.3As2 in heavily electron doped regime of the FeAs-based superconductors. Three hole bands around the zone center are clearly observed and two of them reach the Fermi level (EF) forming two hole pockets. Top of the lowest hole band is located at ∼30 meV below EF showing that it undergoes a pocket-vanishing type Lifshitz transition by electron doping. Around the zone corner, two electron pockets are clearly observed, and the smaller electron pocket is apparently nested with the larger hole pocket at the zone center.

本文言語English
ページ(範囲)S449-S451
ジャーナルPhysica C: Superconductivity and its applications
470
SUPPL.1
DOI
出版ステータスPublished - 2010 12
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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