Anisotropic Thermopower of the Kondo Insulator

被引：0

作者：

Haenel, J. ^{[1
]}

Winkler, H. ^{[1
]}

Ikeda, M. ^{[1
]}

Larrea J, J. ^{[1
,2
]}

Martelli, V. ^{[1
]}

Prokofiev, A. ^{[1
]}

Bauer, E. ^{[1
]}

Paschen, S. ^{[1
]}

机构：

[1] Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria

[2] Univ Johannesburg, Dept Phys, ZA-2006 Auckland Pk, South Africa

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2014年 / 43卷 / 06期

基金：

欧洲研究理事会; 奥地利科学基金会;

关键词：

Kondo insulator; thermopower; power factor; anisotropic hybridization; CERIUM;

D O I：

10.1007/s11664-014-3139-9

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The intermetallic compound has been tentatively classified as Kondo insulator. This class of material, especially non-cubic representatives, is not yet fully understood. Here we report thermopower measurements on single-crystalline between 2 K and 650 K, along the main crystallographic directions. Large positive thermopower is observed in the directions along which the hybridization is strong and a Kondo insulating gap forms. A negative contribution to the thermopower dominates for the crystallographic axis where hybridization is weak and metallicity prevails.

引用

页码：2440 / 2443

页数：4

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