Spin Seebeck and spin Nernst effects of magnons in noncollinear antiferromagnetic insulators

被引：28

作者：

Mook, Alexander ^{[1
]}

Neumann, Robin R. ^{[1
]}

Henk, Jurgen ^{[1
]}

Mertig, Ingrid ^{[1
,2
]}

机构：

[1] Martin Luther Univ Halle Wittenberg, Inst Phys, D-06099 Halle, Saale, Germany

[2] Max Planck Inst Mikrostrukturphys, D-06120 Halle, Saale, Germany

来源：

PHYSICAL REVIEW B | 2019年 / 100卷 / 10期

关键词：

IRREVERSIBLE-PROCESSES; MAGNETIC-STRUCTURE; CONVERSION; EQUATION;

D O I：

10.1103/PhysRevB.100.100401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Our joint theoretical and computer experimental study of heat-to-spin conversion reveals that noncollinear antiferromagnetic insulators are promising materials for generating magnon spin currents upon application of a temperature gradient: They exhibit spin Seebeck and spin Nernst effects. Using Kubo theory and spin dynamics simulations, we explicitly evaluate these effects in a single kagome sheet of potassium iron jarosite, KFe3 (OH)(6)(SO4)(2), and predict a spin Seebeck conversion factor of 0.2 mu V/K at a temperature of 20 K.

引用

页数：7

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