Nature of the electronic states in the layered perovskite noncuprate superconductor Sr2RuO4

被引：51

作者：

Schmidt, M ^{[1
]}

Cummins, TR ^{[1
]}

Burk, M ^{[1
]}

Lu, DH ^{[1
]}

Nucker, N ^{[1
]}

Schuppler, S ^{[1
]}

Lichtenberg, F ^{[1
]}

机构：

[1] VARTA BATTERIE AG,CTR RES & DEV,KELKHEIM,GERMANY

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.53.R14761

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Near-edge x-ray-absorption and photoemission spectra of the noncuprate superconductor Sr2RuO4 are presented. Holes close to the Fermi level are determined by Ru 4d(xy), 4d(xz), and 4d(yz) antibonding states. The density of the occupied states at the Fermi level derived from photoemission is higher than in the cuprates and these states have predominantly Ru 4d character. Angle-resolved photoemission yields a width of the occupied part of the conduction bands that is reduced by a factor of 2 in comparison to band-structure calculations. The importance of electron correlations is also evident in the appearance of screened final states in the Ru 3d core-level spectrum.

引用

页码：14761 / 14764

页数：4

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