Anisotropic magneto-Seebeck effect in the antiferromagnetic semimetal FeGe2

被引：8

作者：

Hashizume, Minori ^{[1
]}

Yokouchi, Tomoyuki ^{[1
,2
]}

Nakagawa, Kurea ^{[2
]}

Shiomi, Yuki ^{[1
,2
]}

机构：

[1] Univ Tokyo, Dept Integrated Sci, Meguro Ku, Tokyo 1538902, Japan

[2] Univ Tokyo, Dept Basic Sci, Meguro Ku, Tokyo 1538902, Japan

来源：

PHYSICAL REVIEW B | 2021年 / 104卷 / 11期

基金：

日本学术振兴会;

关键词：

DENSITY-WAVE ANTIFERROMAGNETISM; PHASE-DIAGRAM;

D O I：

10.1103/PhysRevB.104.115109

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated thermoelectric properties of the antiferromagnetic semimetal FeGe2. As temperature decreases from 340 K, the Seebeck coefficient takes a maximum around the Ned temperature and then decreases to show a sign change from positive to negative <50 K. When a strong magnetic field is applied perpendicular to the sample plane, the sign change disappears, and the positive Seebeck coefficient is observed in the whole temperature range. This large magneto-Seebeck effect is anisotropic since the Seebeck coefficient is insensitive to in-plane magnetic fields. Based on the Mott formula, we discuss the origins for this anisotropic magneto-Seebeck effect.

引用

页数：5