DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, M | - |
dc.contributor.author | Choi, JH | - |
dc.contributor.author | Lee, SH | - |
dc.contributor.author | Watanabe, K | - |
dc.contributor.author | Taniguchi, T | - |
dc.contributor.author | Jhi, SH | - |
dc.contributor.author | LEE, HU JONG | - |
dc.date.accessioned | 2017-07-19T13:59:37Z | - |
dc.date.available | 2017-07-19T13:59:37Z | - |
dc.date.created | 2017-03-08 | - |
dc.date.issued | 2016-11 | - |
dc.identifier.issn | 1745-2473 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/38012 | - |
dc.description.abstract | Ever since the discovery of graphene(1), valley symmetry and its control(2,3) in the material have been a focus of continued studies in relation to valleytronics(4,5). Carrier-guiding quasi-one-dimensional (1D) graphene nanoribbons (GNRs)(6-12) with quantized energy subbands preserving the intrinsic Dirac nature have provided an ideal system to that end. Here, by guiding carriers through dual-gate operation in high-mobility monolayer graphene, we report the realization of quantized conductance in steps of 4e(2)/h in zero magnetic field, which arises from the full symmetry conservation of quasi-1D ballistic GNRs with effective zigzag-edge conduction. A tight-binding model calculation confirms conductance quantization corresponding to zigzag-edge conduction even for arbitrary GNR orientation. Valley-symmetry conservation is further confirmed by intrinsic conductance interference with a preserved Berry phase of pi in a graphene-based Aharonov-Bohm(AB) ring preparedby similar dualgating. This top-down approach for gate-defined carrier guiding in ballistic graphene is of particular relevance in the efforts towards efficient and promising valleytronic applications. | - |
dc.language | English | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.relation.isPartOf | NATURE PHYSICS | - |
dc.title | Valley-symmetry-preserved transport in ballistic graphene with gate-defined carrier guiding | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/NPHYS3804 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | NATURE PHYSICS, v.12, no.11, pp.1022 - + | - |
dc.identifier.wosid | 000387245700013 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | + | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 1022 | - |
dc.citation.title | NATURE PHYSICS | - |
dc.citation.volume | 12 | - |
dc.contributor.affiliatedAuthor | Jhi, SH | - |
dc.contributor.affiliatedAuthor | LEE, HU JONG | - |
dc.identifier.scopusid | 2-s2.0-84975317289 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 20 | - |
dc.description.scptc | 13 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Article | - |
dc.subject.keywordPlus | QUANTIZED CONDUCTANCE | - |
dc.subject.keywordPlus | ELECTRONS | - |
dc.subject.keywordPlus | CONFINEMENT | - |
dc.relation.journalWebOfScienceCategory | Physics, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Physics | - |
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