Spin thermal conductivity of the Haldane chain compound Y2BaNiO5

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dc.creatorKordonis, K.
dc.creatorSologubenko, A. V.
dc.creatorLorenz, T.
dc.creatorCheong, S. -W.
dc.creatorFreimuth, A.
dc.date2006-03-22
dc.date2006-08-15
dc.date.accessioned2026-07-07T07:04:53Z
dc.date.available2026-07-07T07:04:53Z
dc.descriptionWe have measured the thermal conductivity of the spin S=1 chain compound Y2BaNiO5. Analyzing the anisotropy of the thermal transport allows to identify a definite spin-mediated thermal conductivity κ_s along the chain direction. The calculated spin-related energy diffusion constant D_E(T) shows a broad peak around 120 K. Close to room temperature, D_E(T) approaches the theoretically predicted high-temperature value, while scattering of spin excitations by magnetic impurities seems to be the major limiting factor of κ_s at low temperature.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0603586
dc.identifierhttp://arxiv.org/abs/cond-mat/0603586
dc.identifierPhys. Rev. Lett. 97, 115901 (2006)
dc.identifierdoi:10.1103/PhysRevLett.97.115901
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109485
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleSpin thermal conductivity of the Haldane chain compound Y2BaNiO5
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