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Diffusive transport in spin-1 chains at high temperatures

J. Karadamoglou·X. Zotos
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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 of 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.

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J. Karadamoglou, X. Zotos. 2004-05-13. Diffusive transport in spin-1 chains at high temperatures. https://doi.org/10.1103/physrevlett.93.177203

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