Unremovable linked nodal structures protected by crystalline symmetries in stacked bilayer graphene with Kekulé texture
DC Field | Value | Language |
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dc.contributor.author | Chiranjit Mondal | - |
dc.contributor.author | Sunje Kim | - |
dc.contributor.author | Bohm-Jung Yang | - |
dc.date.accessioned | 2023-01-26T02:46:36Z | - |
dc.date.available | 2023-01-26T02:46:36Z | - |
dc.date.created | 2022-10-29 | - |
dc.date.issued | 2022-09 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.uri | https://pr.ibs.re.kr/handle/8788114/12740 | - |
dc.description.abstract | © 2022 American Physical Society. Linking structure is a new concept characterizing topological semimetals, which indicates the interweaving of gap-closing nodes at the Fermi energy (EF) with other nodes below EF. As the number of linked nodes can be changed only via pair creation or pair annihilation, a linked node is more stable and robust than ordinary nodes without linking. Here we propose a type of linked nodal structure between a nodal line (nodal surface) at EF with another nodal line (nodal surface) below EF in two-dimensional (three-dimensional) spinless fermion systems with IT symmetry where I and T indicate inversion and time-reversal symmetries, respectively. Because of additional chiral and rotational symmetries, in our system, a double band inversion creates a pair of linked nodes carrying the same topological charges, and thus the pair is unremovable via a Lifshiftz transition, which is clearly distinct from the cases of the linked nodes reported previously. A realistic tight-binding model and effective theory are developed for such a linking structure. Also, using density-functional-theory calculations, we propose a class of materials, composed of stacked bilayer graphene with Kekulé texture, as a candidate system hosting the linked nodal structure. | - |
dc.language | 영어 | - |
dc.publisher | American Physical Society | - |
dc.title | Unremovable linked nodal structures protected by crystalline symmetries in stacked bilayer graphene with Kekulé texture | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.identifier.wosid | 000870560500004 | - |
dc.identifier.scopusid | 2-s2.0-85139422949 | - |
dc.identifier.rimsid | 79037 | - |
dc.contributor.affiliatedAuthor | Chiranjit Mondal | - |
dc.contributor.affiliatedAuthor | Sunje Kim | - |
dc.contributor.affiliatedAuthor | Bohm-Jung Yang | - |
dc.identifier.doi | 10.1103/PhysRevB.106.L121118 | - |
dc.identifier.bibliographicCitation | Physical Review B, v.106, no.12 | - |
dc.relation.isPartOf | Physical Review B | - |
dc.citation.title | Physical Review B | - |
dc.citation.volume | 106 | - |
dc.citation.number | 12 | - |
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 | SIMPLE SCHEME | - |
dc.subject.keywordPlus | DIRAC CONE | - |
dc.subject.keywordPlus | DISCOVERY | - |
dc.subject.keywordPlus | SEMIMETAL | - |
dc.subject.keywordPlus | BULK | - |