General construction of flat bands with and without band crossings based on wave function singularity
DC Field | Value | Language |
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dc.contributor.author | Yoonseok Hwang | - |
dc.contributor.author | Jun-Won Rhim | - |
dc.contributor.author | Bohm-Jung Yang | - |
dc.date.accessioned | 2021-09-15T04:30:04Z | - |
dc.date.accessioned | 2021-09-15T04:30:04Z | - |
dc.date.available | 2021-09-15T04:30:04Z | - |
dc.date.available | 2021-09-15T04:30:04Z | - |
dc.date.created | 2021-09-06 | - |
dc.date.issued | 2021-08-24 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.uri | https://pr.ibs.re.kr/handle/8788114/10277 | - |
dc.description.abstract | In 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.language | 영어 | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | General construction of flat bands with and without band crossings based on wave function singularity | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.identifier.wosid | 000688493300001 | - |
dc.identifier.scopusid | 2-s2.0-85114015614 | - |
dc.identifier.rimsid | 76326 | - |
dc.contributor.affiliatedAuthor | Yoonseok Hwang | - |
dc.contributor.affiliatedAuthor | Jun-Won Rhim | - |
dc.contributor.affiliatedAuthor | Bohm-Jung Yang | - |
dc.identifier.doi | 10.1103/PhysRevB.104.085144 | - |
dc.identifier.bibliographicCitation | PHYSICAL REVIEW B, v.104, no.8 | - |
dc.relation.isPartOf | PHYSICAL REVIEW B | - |
dc.citation.title | PHYSICAL REVIEW B | - |
dc.citation.volume | 104 | - |
dc.citation.number | 8 | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | HUBBARD-MODEL | - |
dc.subject.keywordPlus | FERROMAGNETISM | - |