Interplay between the Dzyaloshinskii-Moriya term and external fields on spin transport in the spin-1/2 one-dimensional antiferromagnet

被引：7
|
作者：
Lima, L. S. [1 ]
机构：
[1] Ctr Fed Educ Tecnol Minas Gerais, Dept Fis, BR-30510000 Belo Horizonte, MG, Brazil
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2018年 / 454卷
关键词：
QUANTUM PHASE-TRANSITION; INDUCED GAP;
D O I：
10.1016/j.jmmm.2018.01.078
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study the effect of the uniform Dzyaloshinskii-Moriya interaction (symmetric exchange anisotropy) and arbitrary oriented external magnetic fields on spin conductivity in the spin-1/2 one-dimensional Heisenberg antiferromagnet. The spin conductivity is calculated employing abelian bosonization and the Kubo formalism of transport. We investigate the influence of three competing phases at zero-temperature, (Neel phase, dimerized phase and gapless Luttinger liquid phase) on the AC spin conductivity. (C) 2018 Elsevier B.V. All rights reserved.
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页码：150 / 154
页数：5
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