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

研究成果: Article

11 引用 (Scopus)


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.

ジャーナルPhysical Review Letters
出版物ステータスPublished - 2010 4 28

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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