Spin transport in the anisotropic easy-plane two-dimensional Heisenberg antiferromagnet

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:322

Article

Pires, A. S. T.¹  Lima, L. S.¹ 

[1] Univ Fed Minas Gerais, Dept Fis, BR-30123970 Belo Horizonte, MG, Brazil

关键词: Magnetically ordered material;    Spin dynamics;   

DOI  :  10.1016/j.jmmm.2009.10.037

来源: Elsevier

【 摘 要 】

Spin transport in the easy-plane two-dimensional anisotropic Heisenberg antiferromagnet with S=1 is studied. Regular part of spin conductivity is calculated, at zero temperature, using a self-consistent harmonic approximation and the Kubo formalism. Three magnon processes provide the dominant contribution to the spin conductivity. Furthermore, the transport is ballistic and characterized by finite Drude weight. (C) 2009 Elsevier B. V. All rights reserved.

【 授权许可】

Free