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복잡계이론물리연구단
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Strong interlayer coupling and stable topological flat bands in twisted bilayer photonic Moiré superlattices

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dc.contributor.authorChang-Hwan Yi-
dc.contributor.authorHee Chul Park-
dc.contributor.authorMoon Jip Park-
dc.date.accessioned2023-01-26T02:42:54Z-
dc.date.available2023-01-26T02:42:54Z-
dc.date.created2022-10-29-
dc.date.issued2022-10-
dc.identifier.issn2095-5545-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/12698-
dc.description.abstract© 2022, The Author(s).The moiré superlattice of misaligned atomic bilayers paves the way for designing a new class of materials with wide tunability. In this work, we propose a photonic analog of the moiré superlattice based on dielectric resonator quasi-atoms. In sharp contrast to van der Waals materials with weak interlayer coupling, we realize the strong coupling regime in a moiré superlattice, characterized by cascades of robust flat bands at large twist-angles. Surprisingly, we find that these flat bands are characterized by a non-trivial band topology, the origin of which is the moiré pattern of the resonator arrangement. The physical manifestation of the flat band topology is a robust one-dimensional conducting channel on edge, protected by the reflection symmetry of the moiré superlattice. By explicitly breaking the underlying reflection symmetry on the boundary terminations, we show that the first-order topological edge modes naturally deform into higher-order topological corner modes. Our work pioneers the physics of topological phases in the designable platform of photonic moiré superlattices beyond the weakly coupled regime.-
dc.language영어-
dc.publisherNature Publishing Group-
dc.titleStrong interlayer coupling and stable topological flat bands in twisted bilayer photonic Moiré superlattices-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000864635000002-
dc.identifier.scopusid2-s2.0-85139416198-
dc.identifier.rimsid79016-
dc.contributor.affiliatedAuthorChang-Hwan Yi-
dc.contributor.affiliatedAuthorHee Chul Park-
dc.contributor.affiliatedAuthorMoon Jip Park-
dc.identifier.doi10.1038/s41377-022-00977-4-
dc.identifier.bibliographicCitationLight: Science & Applications, v.11, no.1-
dc.relation.isPartOfLight: Science & Applications-
dc.citation.titleLight: Science & Applications-
dc.citation.volume11-
dc.citation.number1-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalWebOfScienceCategoryOptics-
dc.subject.keywordPlusBOUNDARY-ELEMENT METHOD-
dc.subject.keywordPlusMAGIC-ANGLE-
dc.subject.keywordPlusSTATES-
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > 1. Journal Papers (저널논문)
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