Strong interlayer coupling and stable topological flat bands in twisted bilayer photonic Moire superlattices
DC Field | Value | Language |
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dc.contributor.author | Yi, Chang-Hwan | - |
dc.contributor.author | Park, Hee Chul | - |
dc.contributor.author | Park, Moon Jip | - |
dc.date.accessioned | 2023-08-16T07:46:09Z | - |
dc.date.available | 2023-08-16T07:46:09Z | - |
dc.date.created | 2023-07-21 | - |
dc.date.issued | 2022-10 | - |
dc.identifier.issn | 2095-5545 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/189111 | - |
dc.description.abstract | The moire 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 moire 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 moire 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 moire 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 moire 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 moire superlattices beyond the weakly coupled regime. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | SPRINGERNATURE | - |
dc.title | Strong interlayer coupling and stable topological flat bands in twisted bilayer photonic Moire superlattices | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Moon Jip | - |
dc.identifier.doi | 10.1038/s41377-022-00977-4 | - |
dc.identifier.scopusid | 2-s2.0-85139416198 | - |
dc.identifier.wosid | 000864635000002 | - |
dc.identifier.bibliographicCitation | LIGHT-SCIENCE & APPLICATIONS, v.11, no.1, pp.1 - 7 | - |
dc.relation.isPartOf | LIGHT-SCIENCE & APPLICATIONS | - |
dc.citation.title | LIGHT-SCIENCE & APPLICATIONS | - |
dc.citation.volume | 11 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 7 | - |
dc.type.rims | ART | - |
dc.type.docType | 정기학술지(Article(Perspective Article포함)) | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Optics | - |
dc.relation.journalWebOfScienceCategory | Optics | - |
dc.subject.keywordPlus | Bi-layer | - |
dc.subject.keywordPlus | Flat band | - |
dc.subject.keywordPlus | Interlayer coupling | - |
dc.subject.keywordPlus | Reflection symmetry | - |
dc.subject.keywordPlus | Sharp contrast | - |
dc.subject.keywordPlus | Strong-coupling regime | - |
dc.subject.keywordPlus | Twisted bilayers | - |
dc.subject.keywordPlus | Van der Waal | - |
dc.subject.keywordPlus | Weak interlayers | - |
dc.subject.keywordPlus | Wide tunability | - |
dc.subject.keywordAuthor | BOUNDARY-ELEMENT METHOD | - |
dc.subject.keywordAuthor | MAGIC-ANGLE | - |
dc.subject.keywordAuthor | STATES | - |
dc.identifier.url | https://www.nature.com/articles/s41377-022-00977-4 | - |
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