期刊
PHYSICAL REVIEW B
卷 78, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.184514
关键词
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资金
- NSFC
- MOST of China [2006CB601002, 2006CB921302]
- CAS
High-resolution angle-resolved photoemission measurements have been carried out on the (Sr,K) Fe(2)As(2) superconductor (T(c) = 21 K). Three holelike Fermi-surface sheets are resolved around the Gamma point. One electronlike Fermi surface and strong Fermi spots are observed near the M(pi,pi) point which are different from a round electron pocket expected from band calculations. This discrepancy and the observed band renormalization ask for further theoretical effort in understanding the electronic structure of the Fe-based compounds.
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