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arXiv:cond-mat/0405281 · Physical Review Letters

Diffusive Transport in Spin-1 Chains at High Temperatures

J. Karadamoglou, X. Zotos

Published Oct 20, 2004• 36 citations
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Abstract

We present a numerical study on the spin and thermal conductivities of the spin-1 Heisenberg chain in the high temperature limit, in particular, the Drude weight contribution and frequency dependence. We use the exact diagonalization and the recently developed microcanonical Lanczos method; it allows us a finite size scaling analysis by the study of significantly larger lattices. This work, pointing to a diffusive rather than ballistic behavior, is discussed with respect to other recent theoretical and experimental studies.

DOI
10.1103/physrevlett.93.177203

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The spin Drude weight of the spin-1/2 XXZXXZXXZ chain: An analytic finite size study
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