Quantum valley Hall state in gas molecule-adsorbed bilayer graphene
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Kyu Won | - |
dc.contributor.author | Lee, Cheol Eui | - |
dc.date.accessioned | 2021-09-04T03:34:13Z | - |
dc.date.available | 2021-09-04T03:34:13Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2016-02 | - |
dc.identifier.issn | 1567-1739 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/89705 | - |
dc.description.abstract | While a variety of topologically nontrivial insulator phases have been predicted to arise from electron-electron and spin-orbit interactions in bilayer graphene, the trigonal warping of conduction and valence bands leads to a (semi) metallic band structure. An electrostatic potential difference between the two layers due to an external electric field is known to open a bandgap, leading to a topologically nontrivial insulator state. A bandgap may also arise from gas molecules adsorbed on bilayer graphene, implying a topologically nontrivial insulator phase. Here, our density functional theory calculations show that bilayer graphene adsorbing gas molecules is a quantum valley Hall insulator. Thus, adsorption of weak donor (or acceptor) molecules with a large electric dipole moment may be instrumental to realize a topologically nontrivial insulator phase in bilayer graphene even without external electric field. (C) 2015 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.title | Quantum valley Hall state in gas molecule-adsorbed bilayer graphene | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Cheol Eui | - |
dc.identifier.doi | 10.1016/j.cap.2015.11.011 | - |
dc.identifier.scopusid | 2-s2.0-84948422494 | - |
dc.identifier.wosid | 000366945400009 | - |
dc.identifier.bibliographicCitation | CURRENT APPLIED PHYSICS, v.16, no.2, pp.160 - 164 | - |
dc.relation.isPartOf | CURRENT APPLIED PHYSICS | - |
dc.citation.title | CURRENT APPLIED PHYSICS | - |
dc.citation.volume | 16 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 160 | - |
dc.citation.endPage | 164 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.identifier.kciid | ART002085251 | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordAuthor | Quantum valley Hall state | - |
dc.subject.keywordAuthor | Bilayer graphene | - |
dc.subject.keywordAuthor | Gas molecule adsorption | - |
dc.subject.keywordAuthor | Density functional theory | - |
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