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dc.contributor.authorBerezovsky, Jesse
dc.contributor.authorBorunda, Mario
dc.contributor.authorHeller, Eric J.
dc.contributor.authorWestervelt, Robert M.
dc.date.accessioned2011-12-08T20:16:16Z
dc.date.issued2010
dc.identifier.citationBerezovsky, Jesse, Mario Borunda, Eric J. Heller, and Robert M. Westervelt. 2010. Quantum Science and Technology at the Nanoscale. Special Issue. Nanotechnology 21(27): 274013.en_US
dc.identifier.issn0957-4484en_US
dc.identifier.issn1361-6528en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:5364421
dc.description.abstractGraphene provides a fascinating testbed for new physics and exciting opportunities for future applications based on quantum phenomena. To understand the coherent flow of electrons through a graphene device, we employ a nanoscale probe that can access the relevant length scales—the tip of a liquid-He-cooled scanning probe microscope (SPM) capacitively couples to the graphene device below, creating a movable scatterer for electron waves. At sufficiently low temperatures and small size scales, the diffusive transport of electrons through graphene becomes coherent, leading to universal conductance fluctuations (UCF). By scanning the tip over a device, we map these conductance fluctuations versus scatterer position. We find that the conductance is highly sensitive to the tip position, producing \(\delta G \sim e^2/h\) fluctuations when the tip is displaced by a distance comparable to half the Fermi wavelength. These measurements are in good agreement with detailed quantum simulations of the imaging experiment and demonstrate the value of a cooled SPM for probing coherent transport in graphene.en_US
dc.description.sponsorshipChemistry and Chemical Biologyen_US
dc.description.sponsorshipEngineering and Applied Sciencesen_US
dc.description.sponsorshipPhysicsen_US
dc.language.isoen_USen_US
dc.publisherInstitute of Physicsen_US
dc.relation.isversionofdoi:10.1088/0957-4484/21/27/274013en_US
dash.licenseOAP
dc.subjectcondensed matter: electrical, magnetic and opticalen_US
dc.subjectnanoscale science and low-D systemsen_US
dc.titleImaging Coherent Transport in Graphene (Part I): Mapping Universal Conductance Fluctuationsen_US
dc.typeJournal Articleen_US
dc.description.versionAccepted Manuscripten_US
dc.relation.journalNanotechnologyen_US
dash.depositing.authorWestervelt, Robert M.
dc.date.available2011-12-08T20:16:16Z
dc.identifier.doi10.1088/0957-4484/21/27/274013*
dash.contributor.affiliatedWestervelt, Robert
dash.contributor.affiliatedBorunda, Mario
dash.contributor.affiliatedHeller, Eric


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