Technique for bulk Fermiology by photoemission applied to layered ruthenates

被引：65

作者：

Sekiyama, A ^{[1
]}

Kasai, S

Tsunekawa, M

Ishida, Y

Sing, M

Irizawa, A

Yamasaki, A

Imada, S

Muro, T

Saitoh, Y

Onuki, Y

Kimura, T

Tokura, Y

Suga, S

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Dept Mat Phys, Osaka 5608531, Japan

[2] Univ Augsburg, D-86135 Augsburg, Germany

[3] Japan Synchrotron Radiat Res Inst, Mikazuki, Hyogo 6795198, Japan

[4] Japan Atom Energy Res Inst, Kansai Res Estab, Dept Synchrotron Res, Mikazuki, Hyogo 6795148, Japan

[5] Osaka Univ, Grad Sch Sci, Dept Phys, Osaka 5600043, Japan

[6] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.70.060506

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the Fermi surfaces of the superconductor Sr2RuO4 and the nonsuperconductor Sr1.8Ca0.2RuO4 probed by bulk-sensitive high-energy angle-resolved photoemission. It is found that there is one square-shaped hole-like, one square-shaped electron-like, and one circle-shaped electron-like Fermi surface in both compounds. These results provide direct evidence for nesting instability giving rise to magnetic fluctuations. Our study clarifies that the electron correlation effects are changed with composition depending on the individual band.

引用

页码：060506 / 1

页数：4

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