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dc.contributor.authorGoold, John
dc.date.accessioned2021-03-22T17:09:04Z
dc.date.available2021-03-22T17:09:04Z
dc.date.issued2019
dc.date.submitted2019en
dc.identifier.citationJ. J. Mendoza-Arenas, M. Žnidarič, V. K. Varma, J. Goold, S. R. Clark, and A. Scardicchio, 'Asymmetry in energy versus spin transport in certain interacting disordered systems', 2019, Physical Review B: Condensed Matter and Materials;, 99;, 9;en
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/95827
dc.descriptionPUBLISHEDen
dc.description.abstractWe study energy transport in disordered XXZ spin-1/2 chains driven to nonequilibrium configurations by thermal reservoirs of different temperatures at the boundaries, using large-scale matrix product simulations. In particular we discuss the transition between diffusive and subdiffusive transport in sectors of zero and finite magnetization at high temperature. At large anisotropies we find that diffusive energy transport prevails over a large range of disorder strengths, which is in contrast to spin transport that is subdiffusive in the same regime for weak disorder. However, at finite magnetization both energy and spin currents decay as a function of the system size with the same exponent. We conclude that diffusion of energy is much more pervasive than that of magnetization in these disordered spin-1/2 systems, and occurs across a significant range of the interaction-disorder parameter phase space. We support the existence of this asymmetry, reminiscent of that in the clean limit, by an analytical estimation of diffusion constants for weak disorder.en
dc.format.extent094435en
dc.language.isoenen
dc.relation.ispartofseriesPhysical Review B: Condensed Matter and Materials;
dc.relation.ispartofseries99;
dc.relation.ispartofseries9;
dc.rightsYen
dc.subjectlarge anisotropiesen
dc.subjectdisordered XXZ spin-1/2 chainsen
dc.subjectthermal reservoirsen
dc.subject.lcshlarge anisotropiesen
dc.subject.lcshdisordered XXZ spin-1/2 chainsen
dc.subject.lcshthermal reservoirsen
dc.titleAsymmetry in energy versus spin transport in certain interacting disordered systemsen
dc.typeJournal Articleen
dc.contributor.sponsorScience Foundation Irelanden
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/gooldj
dc.identifier.rssinternalid217013
dc.identifier.doihttp://dx.doi.org/0.1103/PhysRevB.99.094435
dc.rights.ecaccessrightsopenAccess
dc.identifier.orcid_id0000-0001-6702-1736


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