Fermi surface and band renormalization of Sr(1-x)K(x)Fe(2)As(2) from angle-resolved photoemission spectroscopy
Fermi surface and band renormalization of Sr(1-x)K(x)Fe(2)As(2) from angle-resolved photoemission spectroscopy
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DOI：
10.1103/physrevb.78.184514
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发表时间：
2008-06
影响因子：
3.7
通讯作者：
Haiyun Liu;Wen-tao Zhang;Lin Zhao;X. Jia;J. Meng;Guodong Liu;Xiaoli Dong;G. Chen;J. Luo;N. L. Wang;W. Lu;Guiling Wang;Yong Zhou;Yong Zhu;Xiaoyang Wang;Zhongxian Zhao;Zu-Yan Xu;Chuangtian Chen;X. Zhou
中科院分区：
文献类型：
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作者：
Haiyun Liu;Wen-tao Zhang;Lin Zhao;X. Jia;J. Meng;Guodong Liu;Xiaoli Dong;G. Chen;J. Luo;N. L. Wang;W. Lu;Guiling Wang;Yong Zhou;Yong Zhu;Xiaoyang Wang;Zhongxian Zhao;Zu-Yan Xu;Chuangtian Chen;X. Zhou
对 (Sr,K) Fe(2)As(2) 超导体 (T(c) = 21 K) 进行了高分辨率角分辨光电发射测量。三个孔状费米面片围绕伽马点解析。在M(pi,pi)点附近观察到一个类电子费米面和强费米点，这与能带计算中预期的圆形电子袋不同。这种差异和观察到的能带重正化要求进一步的理论努力来理解铁基化合物的电子结构。
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.