Thermomagnetic Power and Figure of Merit for Spin-1/2 Heisenberg Chain

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dc.creatorFurukawa, Shunsuke
dc.creatorIkeda, Dai
dc.creatorSakai, Kazumitsu
dc.date2005-08-16
dc.date.accessioned2026-07-07T06:24:58Z
dc.date.available2026-07-07T06:24:58Z
dc.descriptionTransport properties in the presence of magnetic fields are numerically studied for the spin-1/2 Heisenberg XXZ chain. The breakdown of the spin-reversal symmetry due to the magnetic field induces the magnetothermal effect. In analogy with the thermoelectric effect in electron systems, the thermomagnetic power (magnetic Seebeck coefficient) is provided, and is numerically evaluated by the exact diagonalization for wide ranges of temperatures and various magnetic fields. For the antiferromagnetic regime, we find the magnetic Seebeck coefficient changes sign at certain temperatures, which is interpreted as an effect of strong correlations. We also compute the thermomagnetic figure of merit determining the efficiency of the thermomagnetic devices for cooling or power generation.
dc.description8 pages
dc.identifierhttps://arxiv.org/abs/cond-mat/0508374
dc.identifierhttp://arxiv.org/abs/cond-mat/0508374
dc.identifierJ. Phys. Soc. Jpn. 74 (2005) 3241-3247
dc.identifierdoi:10.1143/JPSJ.74.3241
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96724
dc.subjectStatistical Mechanics
dc.subjectStrongly Correlated Electrons
dc.titleThermomagnetic Power and Figure of Merit for Spin-1/2 Heisenberg Chain
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