Low-lying electronic structure of triangular cobaltite

被引：3

作者：

Kuprin, AP ^{[1
]}

Hasan, MZ

Chuang, YD

Qian, D

Foo, M

Cava, RJ

机构：

[1] Lawrence Berkeley Natl Lab, Adv Light Source, Stanford, CA 94305 USA

[2] Princeton Univ, Dept Phys, Joseph Henry Labs, Princeton, NJ 08544 USA

[3] PMI, Princeton Ctr Complex Mat, Princeton, NJ 08544 USA

[4] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2006年 / 67卷 / 1-3期

关键词：

oxides; superconductors; photoelectron spectroscopy; electronic structure; Fermi surface;

D O I：

10.1016/j.jpcs.2005.10.158

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report detailed Fermi surface topology and quasiparticle dynamics of the host cobaltate Na0.7CoO2. A direct mapping of the Fermi surface is carried out by angle-resolved photoemission spectroscopy (ARPES). Fermi surface at 16 K is a hole-pocket centered around the F-point. A highly correlated nature of the electron liquid in this system is evidenced from strong on-site Coulomb interaction seen through a valence satellite and via renormalization of the quasiparticle dispersion. The quasiparticle band disperses less than 100 meV and exists in the T-linear regime of resistivity up to 120 K. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：235 / 238

页数：4

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