TY - JOUR
T1 - Band structure of the heavily-electron-doped FeAs-based Ba(Fe,Co) 2As2 Superconductor suppresses antiferromagnetic correlations
AU - Sudayama, T.
AU - Wakisaka, Y.
AU - Takubo, K.
AU - Morinaga, R.
AU - Sato, T. J.
AU - Arita, M.
AU - Namatame, H.
AU - Taniguchi, M.
AU - Mizokawa, T.
PY - 2010/4/28
Y1 - 2010/4/28
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.104.177002
DO - 10.1103/PhysRevLett.104.177002
M3 - Article
AN - SCOPUS:77951740400
VL - 104
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 17
M1 - 177002
ER -