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Multiple Virtual Tunneling of Dirac Fermions in Granular Graphene

DC Field Value Language
dc.contributor.authorPachoud, Alexandre-
dc.contributor.authorJaiswal, Manu-
dc.contributor.authorWang, Yu-
dc.contributor.authorHong, Byung-Hee-
dc.contributor.authorAhn, Jong-Hyun-
dc.contributor.authorLoh, Kian Ping-
dc.contributor.authorOezyilmaz, Barbaros-
dc.date.accessioned2021-01-31T08:36:01Z-
dc.date.available2021-01-31T08:36:01Z-
dc.date.created2020-12-10-
dc.date.issued2013-12-
dc.identifier.citationScientific Reports, Vol.3, p. 3404-
dc.identifier.issn2045-2322-
dc.identifier.other118937-
dc.identifier.urihttps://hdl.handle.net/10371/172276-
dc.description.abstractGraphene charge carriers behave as massless Dirac fermions, opening the exciting possibility to observe long-range virtual tunneling of electrons in a solid. In granular metals, electron hops arising from series of virtual transitions are predicted to yield observable currents at low-enough temperatures, but to date experimental evidence is lacking. We report on electron transport in granular graphene films self-assembled by hydrogenation of suspended graphene. While the log-conductance shows a characteristic T-1/2 temperature dependence, cooling the samples below 10 K drives a triple crossover: a slope break in log-conductance, simultaneous to a substantial increase in magneto-conductance and onset of large mesoscopic conductance fluctuations. These phenomena are signatures of virtual transitions of electrons between distant localized states, and conductance statistics reveal that the high crossover-temperature is due to the Dirac nature of granular graphene charge carriers.-
dc.language영어-
dc.publisherNature Publishing Group-
dc.titleMultiple Virtual Tunneling of Dirac Fermions in Granular Graphene-
dc.typeArticle-
dc.contributor.AlternativeAuthor홍병희-
dc.identifier.doi10.1038/srep03404-
dc.citation.journaltitleScientific Reports-
dc.identifier.wosid000327784400001-
dc.identifier.scopusid2-s2.0-84890224910-
dc.citation.startpage3404-
dc.citation.volume3-
dc.identifier.sci000327784400001-
dc.description.isOpenAccessY-
dc.contributor.affiliatedAuthorHong, Byung-Hee-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.subject.keywordPlusRAMAN-SPECTROSCOPY-
dc.subject.keywordPlusHYDROGENATED GRAPHENE-
dc.subject.keywordPlusMESOSCOPIC FLUCTUATIONS-
dc.subject.keywordPlus2-DIMENSIONAL SYSTEM-
dc.subject.keywordPlusHOPPING CONDUCTION-
dc.subject.keywordPlusELECTRIC-FIELD-
dc.subject.keywordPlusQUANTUM DOTS-
dc.subject.keywordPlusLOCALIZATION-
dc.subject.keywordPlusTEMPERATURE-
dc.subject.keywordPlusTRANSITION-
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