Magnetothermal transport in the spin-1/ 2 easy-axis antiferromagnetic chain

被引：0

作者：

Zotos, X. ^{[1
,2
]}

机构：

[1] Univ Crete, Dept Phys, Iraklion 70013, Greece

[2] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2024年 / 109卷 / 05期

关键词：

DELTA GREATER-THAN; THERMODYNAMICS; EXCITATIONS;

D O I：

10.1103/PhysRevB.109.054402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By an exact analytical approach we study the magnetothermal transport in the spin- 12 easy-axis Heisenberg model, in particular the thermal conductivity and spin Seebeck effect as a function of anisotropy, magnetic field, and temperature. We stress a distinction between the common spin Seebeck effect with fixed boundary conditions and the one (intrinsic) with open boundary conditions. In the open boundary spin Seebeck effect we find exceptional features at the critical fields between the low field antiferromagnetic phase, the gapless one, and the ferromagnetic at high fields. We further study the development of these features as a function of easy-axis anisotropy and temperature. We point out the potential of these results to experimental studies in spin chain compounds-candidates for spin current generation in the field of spintronics.

引用

页数：5

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