Thermoelectric power calculation by the Boltzmann equation:: NaxCoO2

被引：26

作者：

Hamada, N. ^{[1
]}

Imai, T. ^{[1
]}

Funashima, H. ^{[1
]}

机构：

[1] Tokyo Univ Sci, Dept Phys, Noda, Chiba 2788510, Japan

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 36期

关键词：

D O I：

10.1088/0953-8984/19/36/365221

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A full-potential augmented-plane-wave (FLAPW) band-structure calculation in the local density approximation (LDA) was carried out for hexagonal NaxCoO(2) (x = 0.45, 0.55, 0.66 and 0.75). The Seebeck tensor was estimated by the Boltzmann theory, assuming that the relaxation time is constant on the Fermi surface. The Seebeck tensor is extremely anisotropic; the c-axis Seebeck coefficient varies dramatically with the Na content. The calculation reproduces the experiment semiquantitatively.

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页数：6

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