Underdoped cuprates as fractionalized Fermi liquids: Transition to superconductivity

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dc.contributor.authorMoon, Eun Gookko
dc.contributor.authorSachdev, Subirko
dc.date.accessioned2015-07-22T04:58:42Z-
dc.date.available2015-07-22T04:58:42Z-
dc.date.created2015-07-08-
dc.date.created2015-07-08-
dc.date.issued2011-06-
dc.identifier.citationPHYSICAL REVIEW B, v.83, no.22-
dc.identifier.issn1098-0121-
dc.identifier.urihttp://hdl.handle.net/10203/200028-
dc.description.abstractWe model the underdoped cuprates using fermions moving in a background with local antiferromagnetic order. The antiferromagnetic order fluctuates in orientation, but not in magnitude, so that there is no long-range antiferromagnetism, but a "topological" order survives. The normal state is described as a fractionalized Fermi liquid (FL*), with electronlike quasiparticles coupled to the fractionalized excitations of the fluctuating antiferromagnet. The electronic quasiparticles reside near pocket Fermi surfaces enclosing total area x (the dopant density), centered away from the magnetic Brillouin zone boundary. The violation of the conventional Luttinger theorem is linked to a "species doubling" of these quasiparticles. We describe phenomenological theories of the pairing of these quasiparticles, and show that a large class of mean-field theories generically displays a nodal-antinodal "dichotomy": The interplay of local antiferromagnetism and pairing leads to a small gap near the nodes of the d-wave pairing along the Brillouin zone diagonals, and a large gap in the antinodal region.-
dc.languageEnglish-
dc.publisherAMER PHYSICAL SOC-
dc.subjectFRUSTRATED QUANTUM ANTIFERROMAGNETS-
dc.subjectLARGE-N EXPANSION-
dc.subjectMOTT-INSULATOR-
dc.subjectBI2SR2CACU2O8+DELTA-
dc.subjectPSEUDOGAP-
dc.subjectSTATE-
dc.subjectMODEL-
dc.subjectHOLES-
dc.titleUnderdoped cuprates as fractionalized Fermi liquids: Transition to superconductivity-
dc.typeArticle-
dc.identifier.wosid000291984100006-
dc.identifier.scopusid2-s2.0-79961121568-
dc.type.rimsART-
dc.citation.volume83-
dc.citation.issue22-
dc.citation.publicationnamePHYSICAL REVIEW B-
dc.identifier.doi10.1103/PhysRevB.83.224508-
dc.contributor.localauthorMoon, Eun Gook-
dc.contributor.nonIdAuthorSachdev, Subir-
dc.type.journalArticleArticle-
dc.subject.keywordPlusFRUSTRATED QUANTUM ANTIFERROMAGNETS-
dc.subject.keywordPlusLARGE-N EXPANSION-
dc.subject.keywordPlusMOTT-INSULATOR-
dc.subject.keywordPlusBI2SR2CACU2O8+DELTA-
dc.subject.keywordPlusPSEUDOGAP-
dc.subject.keywordPlusSTATE-
dc.subject.keywordPlusMODEL-
dc.subject.keywordPlusHOLES-
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