Band structure of the heavily-electron-doped FeAs-based Ba(Fe,Co) 2As2 Superconductor suppresses antiferromagnetic correlations

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

11 被引用数 (Scopus)

抄録

In the heavily-electron-doped regime of the Ba(Fe,Co)2As 2 superconductor, three hole bands at the zone center are observed and two of them reach the Fermi level. The larger hole pocket at the zone center is apparently nested with the smaller electron pocket around the zone corner. However, the (π,0) Fermi surface reconstruction reported for the hole-doped case is absent in the heavily-electron-doped case. This observation shows that the apparent Fermi surface nesting alone is not enough to enhance the antiferromagnetic correlation as well as the superconducting transition temperature.

本文言語English
論文番号177002
ジャーナルPhysical Review Letters
104
17
DOI
出版ステータスPublished - 2010 4 28
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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