Brasil | Otro
dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorAndrade, Eric C.
dc.creatorVojta, Matthias
dc.date2015-03-18T15:54:45Z
dc.date2016-10-25T20:32:05Z
dc.date2015-03-18T15:54:45Z
dc.date2016-10-25T20:32:05Z
dc.date2014-11-07
dc.date.accessioned2017-04-06T07:10:49Z
dc.date.available2017-04-06T07:10:49Z
dc.identifierPhysical Review B. College Pk: Amer Physical Soc, v. 90, n. 20, 5 p., 2014.
dc.identifier1098-0121
dc.identifierhttp://hdl.handle.net/11449/117038
dc.identifierhttp://acervodigital.unesp.br/handle/11449/117038
dc.identifier10.1103/PhysRevB.90.205112
dc.identifierWOS:000345247900002
dc.identifierWOS000345247900002.pdf
dc.identifierhttp://dx.doi.org/10.1103/PhysRevB.90.205112
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/927685
dc.descriptionIridates are characterized by a fascinating interplay of spin-orbit and electron-electron interactions. The honeycomb-lattice materials A(2)IrO(3) (A = Na,Li) have been proposed to realize pseudospin-1/2 Mott insulating states with strongly anisotropic exchange interactions, described by the Heisenberg-Kitaev model, but other scenarios involving longer-range exchange interactions or more delocalized electrons have been put forward as well. Here we study the influence of nonmagnetic doping, i.e., depleted moments, on the magnetic properties of experimentally relevant variants of the Heisenberg-Kitaev and Heisenberg J(1)-J(2)-J(3) models. We generically find that the zigzag order of the clean system is replaced, upon doping, by a spin-glass state with short-ranged zigzag correlations. We determine the spin-glass temperature as a function of the doping level and show that this quantity allows one to assess the importance of longer-range exchange interactions when the doping is driven across the site-percolation threshold of the honeycomb lattice.
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageeng
dc.publisherAmer Physical Soc
dc.relationPhysical Review B
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleMagnetism in spin models for depleted honeycomb-lattice iridates: Spin-glass order towards percolation
dc.typeOtro


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