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Observation of Coul...
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Chua, C.University Of Cambridge,University of Cambridge, England
(author)
Observation of Coulomb blockade in nanostructured epitaxial bilayer graphene on SiC
- Article/chapterEnglish2017
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LIBRIS-ID:oai:research.chalmers.se:cea3684d-4c77-426b-a5c6-e5a08a4d89dd
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https://research.chalmers.se/publication/249822URI
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https://doi.org/10.1016/j.carbon.2017.04.019DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-138872URI
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Language:English
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Summary in:English
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Funding Agencies|Engineering and Physical Sciences Research Council [EP/L020963/1]; EU [696656 - GrapheneCore 1]
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We study electron transport in nanostructures patterned in bilayer graphene patches grown epitaxially on SiC as a function of doping, magnetic field, and temperature. Away from charge neutrality transport is only weakly modulated by changes in carrier concentration induced by a local side-gate. At low n-type doping close to charge neutrality, electron transport resembles that in exfoliated graphene nanoribbons and is well described by tunnelling of single electrons through a network of Coulomb-blockaded islands. Under the influence of an external magnetic field, Coulomb blockade resonances fluctuate around an average energy and the gap shrinks as a function of magnetic field. At charge neutrality, however, conduction is less insensitive to external magnetic fields. In this regime we also observe a stronger suppression of the conductance below T*, which we interpret as a sign of broken interlayer symmetry or strong fluctuations in the edge/potential disorder.
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Lartsev, Arseniy,1987Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden(Swepub:cth)arseniy
(author)
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Sui, JinggaoUniversity Of Cambridge,University of Cambridge, England
(author)
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Panchal, V.National Physical Laboratory (NPL),National Phys Lab, England
(author)
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Puddy, ReubenUniversity Of Cambridge,University of Cambridge, England
(author)
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Richardson, CarlyUniversity Of Cambridge,University of Cambridge, England
(author)
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Smith, Charles G.University Of Cambridge,University of Cambridge, England
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Janssen, TjbmNational Physical Laboratory (NPL),National Phys Lab, England
(author)
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Tzalenchuk, AlexanderNational Physical Laboratory (NPL),Royal Holloway University of London,National Phys Lab, England; Royal Holloway University of London, England
(author)
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Yakimova, RositsaLinköpings universitet,Halvledarmaterial,Tekniska fakulteten(Swepub:liu)rosia15
(author)
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Kubatkin, Sergey,1959Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden(Swepub:cth)kubatkin
(author)
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Connolly, M.University Of Cambridge,University of Cambridge, England
(author)
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University Of CambridgeUniversity of Cambridge, England
(creator_code:org_t)
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In:Carbon: Elsevier BV119, s. 426-4300008-62231873-3891
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