Strain-induced topological phase transition with inversion of the in-plane electric polarization in tiny-gap semiconductor SiGe monolayer
DC Field | Value | Language |
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dc.contributor.author | Lee, Kyu Won | - |
dc.contributor.author | Lee, Cheol Eui | - |
dc.date.accessioned | 2021-08-30T19:37:48Z | - |
dc.date.available | 2021-08-30T19:37:48Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2020-07-09 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/54411 | - |
dc.description.abstract | Our density functional theory calculations show that tiny-gap semiconductor SiGe monolayer is a quantum valley Hall insulator with a spontaneous electric polarization and, under a small biaxial strain, undergoes a topological phase transition between the states with opposite valley Chern numbers. The topological phase transition entails abrupt inversion of the in-plane electric polarization corresponding to inversion of the sublattice pseudospin polarization, while the out-of-plane electric polarization shows a linear response to the biaxial strain as well as to the perpendicular electric field regardless of the phase transition. Thus, the quantum valley Hall state entails in-plane ferroelectricity corresponding to a sublattice pseudospin ferromagnetism. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.subject | GRAPHENE | - |
dc.subject | FIELD | - |
dc.subject | SILICENE | - |
dc.title | Strain-induced topological phase transition with inversion of the in-plane electric polarization in tiny-gap semiconductor SiGe monolayer | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Kyu Won | - |
dc.contributor.affiliatedAuthor | Lee, Cheol Eui | - |
dc.identifier.doi | 10.1038/s41598-020-68228-3 | - |
dc.identifier.scopusid | 2-s2.0-85087803686 | - |
dc.identifier.wosid | 000548564900014 | - |
dc.identifier.bibliographicCitation | SCIENTIFIC REPORTS, v.10, no.1 | - |
dc.relation.isPartOf | SCIENTIFIC REPORTS | - |
dc.citation.title | SCIENTIFIC REPORTS | - |
dc.citation.volume | 10 | - |
dc.citation.number | 1 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | FIELD | - |
dc.subject.keywordPlus | SILICENE | - |
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