Raman scattering in the magnetically frustrated double perovskite Sr2YRuO6

dc.creatorGarcia-Flores, AF
dc.creatorTerashita, H
dc.creatorBittar, EM
dc.creatorJardim, RF
dc.creatorGranado, E
dc.date2014
dc.dateFEB
dc.date2014-07-30T14:19:20Z
dc.date2015-11-26T17:39:54Z
dc.date2014-07-30T14:19:20Z
dc.date2015-11-26T17:39:54Z
dc.date.accessioned2018-03-29T00:21:31Z
dc.date.available2018-03-29T00:21:31Z
dc.identifierJournal Of Raman Spectroscopy. Wiley-blackwell, v. 45, n. 2, n. 193, n. 196, 2014.
dc.identifier0377-0486
dc.identifier1097-4555
dc.identifierWOS:000330720800008
dc.identifier10.1002/jrs.4431
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/58836
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/58836
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1286571
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionThe spin correlations and excitations of the Sr2YRuO6 double perovskite are investigated by means of Raman scattering, complemented by synchrotron X-ray diffraction measurements. Anomalous softening of a breathing mode of the oxygen octahedra is observed below similar to 200K, much above the long-range antiferromagnetic ordering temperature, T-N1=32K, due to a spin-phonon coupling mechanism in the presence of magnetic correlations. A diffusive Raman signal is also observed, possibly associated with spin excitations within magnetically correlated regions. Our results point to a characteristic energy and temperature scale of similar to 25meV/200K below which unusual behavior associated with magnetic correlations is observed in this material. Copyright (c) 2013 John Wiley & Sons, Ltd.
dc.description45
dc.description2
dc.description193
dc.description196
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageen
dc.publisherWiley-blackwell
dc.publisherHoboken
dc.publisherEUA
dc.relationJournal Of Raman Spectroscopy
dc.relationJ. Raman Spectrosc.
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjectmagnetic correlations
dc.subjectspin-phonon coupling
dc.subjectdouble perovskites
dc.subjectmagnetic frustration
dc.subjectX-ray diffraction
dc.subjectPhonons
dc.titleRaman scattering in the magnetically frustrated double perovskite Sr2YRuO6
dc.typeArtículos de revistas


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