Fermi surfaces, electron-hole asymmetry, and correlation kink in a three-dimensional Fermi liquid LaNiO3

被引：86

作者：

Eguchi, R. ^{[1
,2
]}

Chainani, A. ^{[1
]}

Taguchi, M. ^{[1
]}

Matsunami, M. ^{[1
]}

Ishida, Y. ^{[1
]}

Horiba, K. ^{[1
]}

Senba, Y. ^{[3
]}

Ohashi, H. ^{[3
]}

Shin, S. ^{[1
,2
]}

机构：

[1] RIKEN, SPring Ctr 8, Sayo, Hyogo 6795148, Japan

[2] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[3] JASRI SPring 8, Sayo, Hyogo 6795198, Japan

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 11期

关键词：

density functional theory; electron correlations; Fermi liquid; Fermi surface; lanthanum compounds; renormalisation; strongly correlated electron systems; X-ray photoelectron spectra; METAL-INSULATOR-TRANSITION; RNIO3; R; SUPERCONDUCTORS; SUSCEPTIBILITY; PEROVSKITES; DIFFRACTION; SPRING-8; BL17SU; GAS;

D O I：

10.1103/PhysRevB.79.115122

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the three-dimensional (3D) momentum-resolved soft x-ray photoemission spectroscopy of the Fermi liquid LaNiO3. The out-of-plane and in-plane cuts of the 3D electron- and hole-Fermi surfaces (FSs) are observed by energy- and angle-dependent photoemission measurements. The energy bands forming the electron FS suggest an omega(2) dependence of the imaginary part of the self-energy and a "correlation kink" at an energy scale of 0.25 eV. In contrast, the bands which form nesting character hole FSs do not show kinks and match local-density approximation calculations. The results indicate a momentum-dependent mass renormalization, leading to electron-hole asymmetry in strongly correlated LaNiO3.

引用

页数：6

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