Heat transport in low-dimensional Heisenberg antiferromagnets |
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| Authors: | L.S. Lima A.S.T. Pires |
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| Affiliation: | a Department of Physics, University of Kaiserslautern, D-67663 Kaiserslautern, Germany
b Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 702, 30123-970, Brazil |
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| Abstract: | In this paper we study thermal transport in the one-dimensional spin S=1 and the two dimensional spin S=1/2 Heisenberg antiferromagnets, using the modified spin wave theory and the Kubo linear response formalism, to calculate the thermal conductivity. The low-temperature thermal Drude weights, in both cases, are non-zero at finite temperature indicating a ballistic behavior. |
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| Keywords: | Magnetically ordered material Heat transport |
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