Eur. Phys. J. B (2013) 86: 99
https://doi.org/10.1140/epjb/e2013-30924-7

Regular Article

Spin transport of the quantum integer spin S one-dimensional Heisenberg antiferromagnet coupled to phonons

Departamento de Física ICEx, UFMG, CP 702, 31270-901, Belo Horizonte, MG, Brazil

^a e-mail: lslima@fisica.ufmg.br

Received: 10 October 2012
Received in final form: 5 December 2012
Published online: 18 March 2013

Abstract

We study the effect of the spin-phonon coupling on spin transport in the S = 1 one-dimensional Heisenberg antiferromagnet. The spin conductivity is calculated using the modified spin wave theory and the Kubo formalism of transport. We calculate the regular part of the spin conductivity, σ^reg(ω), as function of the frequency at finite temperature. We obtain a strong effect of the magnon-phonon interaction on magnon transport.