Moiré-modulated conductance of hexagonal boron nitride tunnel barriers
dc.contributor.author | Summerfield, Alex | |
dc.contributor.other | Cheng, Tin s. | |
dc.contributor.other | Kozikov, Aleksey | |
dc.contributor.other | Davies, Andrew | |
dc.contributor.other | Cho, Yong-Jin | |
dc.contributor.other | Khlobystov, Andrei N. | |
dc.contributor.other | Mellor, Christopher J. | |
dc.contributor.other | Foxon, C. Thomas | |
dc.contributor.other | Watanabe, Kenji | |
dc.contributor.other | Taniguchi, Takashi | |
dc.contributor.other | Eaves, Laurence | |
dc.contributor.other | Novoselov, Kostya S. | |
dc.contributor.other | Novikov, Sergei V. | |
dc.contributor.other | Beton, Peter | |
dc.date.accessioned | 2018-07-16T09:44:02Z | |
dc.date.available | 2018-07-16T09:44:02Z | |
dc.date.issued | 2018-07-16 | |
dc.identifier.uri | https://rdmc.nottingham.ac.uk/handle/internal/362 | |
dc.description.abstract | Monolayer hexagonal boron nitride (hBN) tunnel barriers investigated using conductive atomic force microscopy reveal moiré patterns in the spatial maps of their tunnel conductance consistent with the formation of a moiré superlattice between the hBN and an underlying highly ordered pyrolytic graphite (HOPG) substrate. This variation is attributed to a periodic modulation of the local density of states and occurs for both exfoliated hBN barriers and epitaxially-grown layers. The epitaxial barriers also exhibit enhanced conductance at localised sub-nanometre regions which are attributed to exposure of the substrate to a nitrogen plasma source during the high temperature growth process. Our results show clearly a spatial periodicity of tunnel current due to the formation of a moiré superlattice and we argue that this can provide a mechanism for elastic scattering of charge carriers for similar interfaces embedded in graphene/hBN resonant tunnel diodes. | en_UK |
dc.language.iso | en | en_UK |
dc.publisher | The University of Nottingham | en_UK |
dc.subject.lcsh | Atomic force microscopy | en_UK |
dc.subject.lcsh | Superlattices as materials | en_UK |
dc.subject.lcsh | Boron nitride | en_UK |
dc.subject.lcsh | Graphite composites | en_UK |
dc.subject.lcsh | Molecular beam epitaxy | en_UK |
dc.title | Moiré-modulated conductance of hexagonal boron nitride tunnel barriers | en_UK |
dc.identifier.doi | http://doi.org/10.17639/nott.358 | |
dc.subject.free | Atomic force microscopy moire tunnel conductance hexagonal boron nitride molecular beam epitaxy | en_UK |
dc.subject.jacs | Physical sciences::Materials science | en_UK |
dc.subject.lc | Q Science::QC Physics::QC170 Atomic physics. Constitution and properties of matter | en_UK |
dc.date.collection | 2016-2018 | en_UK |
uon.division | University of Nottingham, UK Campus::Faculty of Science::School of Physics and Astronomy | en_UK |
uon.funder.controlled | Engineering & Physical Sciences Research Council | en_UK |
uon.datatype | Imaging data | en_UK |
uon.funder.free | Leverhulme Trust | en_UK |
uon.funder.free | EU Graphene Flagship | en_UK |
uon.funder.free | European Research Council | en_UK |
uon.funder.free | The Royal Society | en_UK |
uon.funder.free | US Army Research Office | en_UK |
uon.funder.free | MEXT Japan | en_UK |
uon.funder.free | CREST | en_UK |
uon.grant | EP/L013908/1 | en_UK |
uon.grant | EP/P019080/1 | en_UK |
uon.grant | EP/M50810X/1 | en_UK |
uon.grant | RPG-2014-129 | en_UK |
uon.grant | W911NF-16-1-0279 | en_UK |
uon.grant | JPMJCR15F3 | en_UK |
uon.collectionmethod | Instruments: Asylum Research Cypher-S AFM/STM | en_UK |
uon.preservation.rarelyaccessed | true | |
dc.relation.doi | 10.1021/acs.nanolett.8b01223 | en_UK |
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