Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 조준형 | - |
dc.date.accessioned | 2017-03-09T07:47:06Z | - |
dc.date.available | 2017-03-09T07:47:06Z | - |
dc.date.issued | 2015-07 | - |
dc.identifier.citation | PHYSICAL REVIEW B, v. 92, NO 3, Page. 35443-35448 | en_US |
dc.identifier.issn | 1098-0121 | - |
dc.identifier.issn | 1550-235X | - |
dc.identifier.uri | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.92.035443 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/25987 | - |
dc.description.abstract | Based on first-principles density-functional theory calculations, we present a comparative study of the electronic structures of ultranarrow zigzag graphene nanoribbons (ZGNRs) embedded in a hexagonal boron nitride (BN) sheet and fully hydrogenated graphene (graphane) as a function of their width N (the number of zigzag C chains composing the ZGNRs). We find that ZGNRs/BN have the nonmagnetic ground state except at N = 5 and 6 that weakly stabilize as a half-semimetallic state, whereas ZGNRs/graphane with N ˃= 2 exhibit a strong antiferromagnetic coupling between ferromagnetically ordered edge states on each edge. It is revealed that the disparate magnetic properties of the two classes of ZGNRs are attributed to the contrasting interedge superexchange interactions arising from different interface structures: that is, the asymmetric interface structure of ZGNRs/BN gives a relatively short-range and weak superexchange interaction between the two inequivalent edge states, while the symmetric interface structure of ZGNRs/graphane gives a long-range, strong interedge superexchange interaction. | en_US |
dc.description.sponsorship | This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (2015R1A2A2A01003248) and the Korea-Sweden Research Cooperation Programme of the NRF (Grant No. 2011-0031286) and the Swedish Foundation for International Cooperation in Research and Higher Education (STINT, Grant No. 2011/036). R.H.S. acknowledges support from the Swedish Research Council (VR, Grant No. 621-2009-3628). The calculations were performed at the KISTI supercomputing center through the strategic support program (KSC-2014-C3-049) for supercomputing application research. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER PHYSICAL SOC | en_US |
dc.subject | HEXAGONAL BORON-NITRIDE | en_US |
dc.subject | ZIGZAG GRAPHENE | en_US |
dc.subject | TRANSPORT-PROPERTIES | en_US |
dc.subject | HALF-METALLICITY | en_US |
dc.subject | EDGE | en_US |
dc.subject | MAGNETISM | en_US |
dc.subject | NANOROADS | en_US |
dc.subject | NANOTUBES | en_US |
dc.subject | SHEETS | en_US |
dc.subject | GROWTH | en_US |
dc.title | Contrasting interedge superexchange interactions of graphene nanoribbons embedded in h-BN and graphane | en_US |
dc.type | Article | en_US |
dc.relation.no | 3 | - |
dc.relation.volume | 92 | - |
dc.identifier.doi | 10.1103/PhysRevB.92.035443 | - |
dc.relation.page | 35443-35448 | - |
dc.relation.journal | PHYSICAL REVIEW B | - |
dc.contributor.googleauthor | Kim, Sun-Woo | - |
dc.contributor.googleauthor | Kim, Hyun-Jung | - |
dc.contributor.googleauthor | Choi, Jin-Ho | - |
dc.contributor.googleauthor | Scheicher, Ralph H. | - |
dc.contributor.googleauthor | Cho, Jun-Hyung | - |
dc.relation.code | 2015001929 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF PHYSICS | - |
dc.identifier.pid | chojh | - |
dc.identifier.researcherID | R-7256-2016 | - |
dc.identifier.orcid | http://orcid.org/0000-0002-1785-1835 | - |
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