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dc.contributor.authorAlpichshev, Zhanybek
dc.contributor.authorMahmood, Fahad
dc.contributor.authorCao, Gang
dc.contributor.authorGedik, Nuh
dc.date.accessioned2015-01-20T16:32:47Z
dc.date.available2015-01-20T16:32:47Z
dc.date.issued2015-01
dc.date.submitted2014-05
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.urihttp://hdl.handle.net/1721.1/92979
dc.description.abstractWe use ultrafast optical spectroscopy to observe binding of charged single-particle excitations (SE) in the magnetically frustrated Mott insulator Na[subscript 2]IrO[subscript 3]. Above the antiferromagnetic ordering temperature (T[subscript N]) the system response is due to both Hubbard excitons (HE) and their constituent unpaired SE. The SE response becomes strongly suppressed immediately below (T[subscript N]). We argue that this increase in binding energy is due to a unique interplay between the frustrated Kitaev and the weak Heisenberg-type ordering term in the Hamiltonian, mediating an effective interaction between the spin-singlet SE. This interaction grows with distance causing the SE to become trapped in the HE, similar to quark confinement inside hadrons. This binding of charged particles, induced by magnetic ordering, is a result of a confinement-deconfinement transition of spin excitations. This observation provides evidence for spin liquid type behavior which is expected in Na[subscript 2]IrO[subscript 3].en_US
dc.description.sponsorshipUnited States. Army Research Office (Grant W911NF-11-1-0331)en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (Career Award DMR-0845296)en_US
dc.description.sponsorshipAlfred P. Sloan Foundationen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevLett.114.017203en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAmerican Physical Societyen_US
dc.titleConfinement-Deconfinement Transition as an Indication of Spin-Liquid-Type Behavior in Na[subscript 2]IrO[subscript 3]en_US
dc.typeArticleen_US
dc.identifier.citationAlpichshev, Zhanybek et al. “Confinement-Deconfinement Transition as an Indication of Spin-Liquid-Type Behavior in Na[subscript 2]IrO[subscript 3].” Physical Review Letters 114.1 (2015): 017203-1-017203-5. © 2015 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.mitauthorAlpichshev, Zhanybeken_US
dc.contributor.mitauthorMahmood, Fahaden_US
dc.contributor.mitauthorGedik, Nuhen_US
dc.relation.journalPhysical Review Lettersen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2015-01-07T23:00:12Z
dc.language.rfc3066en
dc.rights.holderAmerican Physical Society
dspace.orderedauthorsAlpichshev, Zhanybek; Mahmood, Fahad; Cao, Gang; Gedik, Nuhen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-9641-3453
dc.identifier.orcidhttps://orcid.org/0000-0002-6394-4987
dc.identifier.orcidhttps://orcid.org/0000-0002-7183-5203
mit.licensePUBLISHER_POLICYen_US


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