Two-Dimensional and Three-Dimensional Fermi Surfaces of Superconducting BaFe2(As1-xPx)2 and Their Nesting Properties Revealed by Angle-Resolved Photoemission Spectroscopy

被引：49
|
作者：
Yoshida, T. [1 ,2 ]
Nishi, I. [1 ]
Ideta, S. [1 ]
Fujimori, A. [1 ,2 ]
Kubota, M. [3 ]
Ono, K. [3 ]
Kasahara, S. [4 ,5 ]
Shibauchi, T. [5 ]
Terashima, T. [4 ]
Matsuda, Y. [5 ]
Ikeda, H. [2 ,5 ]
Arita, R. [2 ,6 ]
机构：
[1] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
[2] JST, Transformat Res Project Iron Pnictides TRIP, Chiyoda Ku, Tokyo 1020075, Japan
[3] KEK, Photon Factory, Tsukuba, Ibaraki 3050801, Japan
[4] Kyoto Univ, Res Ctr Low Temp & Mat Sci, Kyoto 6068502, Japan
[5] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
[6] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138561, Japan
来源：
PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 11期
基金：
日本学术振兴会;
关键词：
D O I：
10.1103/PhysRevLett.106.117001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have studied the three-dimensional shapes of the Fermi surfaces (FSs) of BaFe2(As1-xPx)(2) (x = 0.38), where superconductivity is induced by isovalent P substitution and by angle-resolved photoemission spectroscopy. Moderately strong electron mass enhancement has been identified for both the electron and hole FSs. Among two observed hole FSs, the nearly two-dimensional one shows good nesting with the outer two-dimensional electron FS, but its orbital character is different from the outer electron FS. The three-dimensional hole FS shows poor nesting with the electron FSs. The present results suggest that the three dimensionality and the difference in the orbital character weaken FS nesting while partial nesting among the outer electron FSs of d(xy) character and/or that within the three-dimensional hole FS becomes dominant, which may lead to the nodal superconductivity.
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页数：4
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