Finite temperature transport in disordered Heisenberg chains

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dc.creatorKarahalios, A.
dc.creatorMetavitsiadis, A.
dc.creatorZotos, X.
dc.creatorGorczyca, A.
dc.creatorPrelovšek, P.
dc.date2008-03-10
dc.date2009-02-02
dc.date.accessioned2026-07-07T12:35:57Z
dc.date.available2026-07-07T12:35:57Z
dc.descriptionUsing numerical diagonalization techniques, we explore the effect of local and bond disorder on the finite temperature spin and thermal conductivities of the one dimensional anisotropic spin-1/2 Heisenberg model. High-temperature results for local disorder show that the dc conductivties are finite, apart from the uncorrelated - XY case - where dc transport vanishes. Moreover, at strong disorder, we find finite dc conductivities at all temperatures $T$, except T=0. The low frequency conductivities are characterized by a nonanalytic cusp shape. Similar behavior is found for bond disorder.
dc.description4 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/0803.1379
dc.identifierhttp://arxiv.org/abs/0803.1379
dc.identifierPhysical Review B, Vol. 79, page 024425 (2009)
dc.identifierdoi:10.1103/PhysRevB.79.024425
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/217936
dc.subjectStrongly Correlated Electrons
dc.titleFinite temperature transport in disordered Heisenberg chains
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