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dc.contributor.authorOhadi, Hamiden
dc.contributor.authorDreisman, Aen
dc.contributor.authorRubo, YGen
dc.contributor.authorPinsker, Fen
dc.contributor.authorRedondo, Y del Valle-Inclanen
dc.contributor.authorTsintzos, SIen
dc.contributor.authorHatzopoulos, Zen
dc.contributor.authorSavvidis, PGen
dc.contributor.authorBaumberg, Jeremyen
dc.date.accessioned2015-06-17T13:36:52Z
dc.date.available2015-06-17T13:36:52Z
dc.date.issued2015-06-17en
dc.identifier.citationOhadi et al. Physical Review X (2015) Vol. 5, 031002. doi: 10.1103/PhysRevX.5.031002
dc.identifier.issn2160-3308
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/248529
dc.description.abstractWe observe a spontaneous parity breaking bifurcation to a ferromagnetic state in a spatially-trapped exciton-polariton condensate. At a critical bifurcation density under nonresonant excitation, the whole condensate spontaneously magnetizes and randomly adopts one of two elliptically-polarized (up to 95% circularly-polarized) states with opposite handedness of polarization. The magnetized condensate remains stable for many seconds at 5 K, but at higher temperatures can flip from one magnetic orientation to another. We optically address these states and demonstrate the inversion of the magnetic state by resonantly injecting 100-fold weaker pulses of opposite spin. Theoretically, these phenomena can be well described as spontaneous symmetry breaking of the spin degree of freedom induced by different loss rates of the linear polarizations.
dc.description.sponsorshipThis work was supported by Grants EPSRC No. EP/G060649/1, EU No. CLERMONT4 235114, EU No. INDEX 289968, Spanish MEC (MAT2008-01555), Greek GSRT ARISTEIA Apollo program and Fundación La Caixa, and Mexican CONACYT No. 251808. FP acknowledges financial support through an EPSRC doctoral prize fellowship at the University of Cambridge and a Schrödinger fellowship at the University of Oxford.
dc.languageEnglishen
dc.language.isoenen
dc.publisherAmerican Physical Society
dc.rightsAttribution 2.0 UK: England & Wales
dc.rights.urihttp://creativecommons.org/licenses/by/2.0/uk/
dc.titleSpontaneous spin bifurcations and ferromagnetic phase transitions in a spinor exciton-polariton condensateen
dc.typeArticle
dc.description.versionThis is the final version of the article. It first appeared from the American Physical Society via http://dx.doi.org/10.1103/PhysRevX.5.031002en
prism.number031002en
prism.publicationDate2015en
prism.publicationNamePhysical Review Xen
prism.volume5en
dc.rioxxterms.funderEPSRC
dc.rioxxterms.projectidEP/G060649/1
rioxxterms.versionofrecord10.1103/PhysRevX.5.031002en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2015-06-17en
dc.contributor.orcidOhadi, Hamid [0000-0001-6418-111X]
dc.contributor.orcidBaumberg, Jeremy [0000-0002-9606-9488]
dc.identifier.eissn2160-3308
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (EP/G060649/1)
pubs.funder-project-idEPSRC (EP/L027151/1)
pubs.funder-project-idEuropean Research Council (320503)
pubs.funder-project-idEPSRC (EP/K028510/1)
pubs.funder-project-idEC FP7 MC ITN (289968)
pubs.funder-project-idEC FP7 MC ITN (235114)


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Attribution 2.0 UK: England & Wales
Except where otherwise noted, this item's licence is described as Attribution 2.0 UK: England & Wales