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강상관계 물질 연구단
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General construction of flat bands with and without band crossings based on wave function singularity

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dc.contributor.authorYoonseok Hwang-
dc.contributor.authorJun-Won Rhim-
dc.contributor.authorBohm-Jung Yang-
dc.date.accessioned2021-09-15T04:30:04Z-
dc.date.accessioned2021-09-15T04:30:04Z-
dc.date.available2021-09-15T04:30:04Z-
dc.date.available2021-09-15T04:30:04Z-
dc.date.created2021-09-06-
dc.date.issued2021-08-24-
dc.identifier.issn2469-9950-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/10277-
dc.description.abstractIn this work, we develop a systematic method of constructing flat-band models with and without band crossings. Our construction scheme utilizes the symmetry and spatial shape of a compact localized state (CLS) and also the singularity of the flat-band wave function obtained by a Fourier transform of the CLS (FT-CLS). In order to construct a flat-band model systematically using these ingredients, we first choose a CLS with a specific symmetry representation in a given lattice. Then, the singularity of FT-CLS indicates whether the resulting flat band exhibits a band crossing point or not. A tight-binding Hamiltonian with the flat band corresponding to the FT-CLS is obtained by introducing a set of basis molecular orbitals, which are orthogonal to the FT-CLS. Our construction scheme can be systematically applied to any lattice so that it provides a powerful theoretical framework to study exotic properties of both gapped and gapless flat bands arising from their wave function singularities.-
dc.language영어-
dc.publisherAMER PHYSICAL SOC-
dc.titleGeneral construction of flat bands with and without band crossings based on wave function singularity-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000688493300001-
dc.identifier.scopusid2-s2.0-85114015614-
dc.identifier.rimsid76326-
dc.contributor.affiliatedAuthorYoonseok Hwang-
dc.contributor.affiliatedAuthorJun-Won Rhim-
dc.contributor.affiliatedAuthorBohm-Jung Yang-
dc.identifier.doi10.1103/PhysRevB.104.085144-
dc.identifier.bibliographicCitationPHYSICAL REVIEW B, v.104, no.8-
dc.relation.isPartOfPHYSICAL REVIEW B-
dc.citation.titlePHYSICAL REVIEW B-
dc.citation.volume104-
dc.citation.number8-
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.keywordPlusHUBBARD-MODEL-
dc.subject.keywordPlusFERROMAGNETISM-
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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