Doping-dependent and orbital-dependent band renormalization in Ba(Fe 1-xCox)2As2 superconductors

Takaaki Sudayama, Yuki Wakisaka, Takashi Mizokawa, Soshi Ibuka, Rei Morinaga, Taku J. Sato, Masashi Arita, Hirofumi Namatame, Masaki Taniguchi, Naurang L. Saini

研究成果: Article査読

14 被引用数 (Scopus)


Angle resolved photoemission spectroscopy of Ba(Fe1-xCo x)2As2 (x = 0:06, 0.14, and 0.24) shows that the width of the Fe 3dyz/zx hole band depends on the doping level. In contrast, the Fe 3dx2-y2 and 3z2 - r2 bands are rigid and shifted by the Co doping. The Fe 3dyz/zx hole band is flattened at the optimal doping level x = 0:06, indicating that the band renormalization of the Fe 3dyz/zx band correlates with the enhancement of the superconducting transition temperature. The orbital-dependent and doping-dependent band renormalization indicates that the fluctuations responsible for the superconductivity is deeply related to the Fe 3d orbital degeneracy.

ジャーナルjournal of the physical society of japan
出版ステータスPublished - 2011 11

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「Doping-dependent and orbital-dependent band renormalization in Ba(Fe <sub>1-x</sub>Co<sub>x</sub>)<sub>2</sub>As<sub>2</sub> superconductors」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。