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Metal-insulator transition in infinitesimally weakly disordered flat bands

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dc.contributor.authorTilen ČadeŽ-
dc.contributor.authorYeongjun Kim-
dc.contributor.authorANDREANOV Alexey-
dc.contributor.authorFlach Sergej-
dc.date.accessioned2021-12-20T01:30:19Z-
dc.date.available2021-12-20T01:30:19Z-
dc.date.created2021-12-15-
dc.date.issued2021-11-15-
dc.identifier.issn2469-9950-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/10896-
dc.description.abstract© 2021 American Physical Society.We study the effect of infinitesimal onsite disorder on d-dimensional all bands flat lattices. The lattices are generated from diagonal Hamiltonians by a sequence of (d+1) local unitary transformations parametrized by angles θi. Without loss of generality, we consider the case of two flat bands separated by a finite gap, Δ. The perturbed states originating from the flat bands are described by an effective tight-binding network with finite on- and off-diagonal disorder strength which depends on the manifold angles θi. The original infinitesimal on-site disorder strength W is only affecting the overall scale of the effective Hamiltonian. Upon variation of the manifold angles for d=1 and d=2 we find that localization persists for any choice of local unitaries, and the localization length can be maximized for specific values of θi. Instead, in d=3 we identify a nonperturbative metal-insulator transition upon varying all bands' flat manifold angles.-
dc.language영어-
dc.publisherAmerican Physical Society-
dc.titleMetal-insulator transition in infinitesimally weakly disordered flat bands-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000720068200006-
dc.identifier.scopusid2-s2.0-85119189242-
dc.identifier.rimsid76820-
dc.contributor.affiliatedAuthorTilen ČadeŽ-
dc.contributor.affiliatedAuthorYeongjun Kim-
dc.contributor.affiliatedAuthorANDREANOV Alexey-
dc.contributor.affiliatedAuthorFlach Sergej-
dc.identifier.doi10.1103/PhysRevB.104.L180201-
dc.identifier.bibliographicCitationPhysical Review B, v.104, no.18-
dc.relation.isPartOfPhysical Review B-
dc.citation.titlePhysical Review B-
dc.citation.volume104-
dc.citation.number18-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaMaterials Science-
dc.relation.journalResearchAreaPhysics-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryPhysics, Applied-
dc.relation.journalWebOfScienceCategoryPhysics, Condensed Matter-
dc.subject.keywordPlusSTATES-
dc.subject.keywordPlusHUBBARD-MODEL-
dc.subject.keywordPlusANDERSON LOCALIZATION-
dc.subject.keywordPlusFERROMAGNETISM-
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > 1. Journal Papers (저널논문)
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