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dc.contributor.authorHerbschleb, EDen
dc.contributor.authorPuddy, RKen
dc.contributor.authorMarconcini, Pen
dc.contributor.authorGriffiths, JPen
dc.contributor.authorJones, GACen
dc.contributor.authorMacucci, Men
dc.contributor.authorSmith, Charlesen
dc.contributor.authorConnolly, Malcolmen
dc.date.accessioned2015-08-05T14:20:34Z
dc.date.available2015-08-05T14:20:34Z
dc.date.issued2015-09-11en
dc.identifier.citationHerbschleb et al. Physical Review B (2015) Vol. 92, 125414. doi: 10.1103/PhysRevB.92.125414en
dc.identifier.issn1098-0121
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/249210
dc.description.abstractWe use electrostatic lithography to fabricate a graphene p-n-p junction and exploit the coherence of weakly confined Dirac quasiparticles to image the underlying scattering potential using low-temperature scanning gate microscopy. The tip-induced perturbation to the junction potential modifies the condition for resonant scattering, enabling us to detect localized Fabry-Pérot subcavities from the focal point of halos in scanning gate images. In addition to halos over the bulk, we also observe ones spatially registered to the physical edge of the graphene. Guided by quantum transport simulations, we attribute these to modified resonant scattering at the edges within elongated cavities that form due to focusing of the electrostatic field.
dc.description.sponsorshipWe would like to acknowledge support from EPSRC.
dc.languageEnglishen
dc.language.isoenen
dc.publisherAmerican Physical Society
dc.rightsAttribution-NonCommercial 2.0 UK: England & Wales*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/2.0/uk/*
dc.titleDirect imaging of coherent quantum transport in graphene p−n−p junctionsen
dc.typeArticle
dc.description.versionThis is the author accepted manuscript. The final version is available from APS via http://dx.doi.org/http://dx.doi.org/10.1103/PhysRevB.92.125414en
prism.number125414en
prism.publicationDate2015en
prism.publicationNamePhysical Review Ben
prism.volume92en
dc.rioxxterms.funderEPSRC
rioxxterms.versionofrecord10.1103/PhysRevB.92.125414en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2015-09-11en
dc.contributor.orcidSmith, Charles [0000-0002-5611-0095]
dc.identifier.eissn1550-235X
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (EP/I029575/1)
pubs.funder-project-idEPSRC (EP/L020963/1)


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Attribution-NonCommercial 2.0 UK: England & Wales
Except where otherwise noted, this item's licence is described as Attribution-NonCommercial 2.0 UK: England & Wales