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dc.contributor.authorAwan, SA
dc.contributor.authorLombardo, Antonio
dc.contributor.authorColli, A
dc.contributor.authorPrivitera, G
dc.contributor.authorKulmala, TS
dc.contributor.authorKivioja, JM
dc.contributor.authorKoshino, M
dc.contributor.authorFerrari, Andrea
dc.date.accessioned2018-10-10T05:18:42Z
dc.date.available2018-10-10T05:18:42Z
dc.date.issued2016-03
dc.identifier.issn2053-1583
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/283421
dc.description.abstractWe measure graphene coplanar waveguides from direct current (DC) to 13.5GHz and show that the apparent resistance (in the presence of parasitic impedances) has an quadratic frequency dependence, but the intrinsic conductivity (without the influence of parasitic impedances) is frequency-independent. Consequently, in our devices the real part of the complex alternating current conductivity is the same as the DC value and the imaginary part~0. The graphene channel is modelled as a parallel resistive-capacitive network with a frequency dependence identical to that of the Drude conductivity with momentum relaxation time~2.1ps, highlighting the influence of alternating current (AC) electron transport on the electromagnetic properties of graphene. This can lead to optimized design of high-speed analogue field-effect transistors, mixers, frequency doublers, low-noise amplifiers and radiation detectors.
dc.publisherIOP Publishing
dc.titleTransport conductivity of graphene at RF and microwave frequencies
dc.typeArticle
prism.issueIdentifier1
prism.publicationDate2016
prism.publicationName2D Materials
prism.volume3
dc.identifier.doi10.17863/CAM.30788
rioxxterms.versionofrecord10.1088/2053-1583/3/1/015010
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2016-02-19
dc.contributor.orcidLombardo, Antonio [0000-0003-3088-6458]
dc.contributor.orcidFerrari, Andrea [0000-0003-0907-9993]
dc.identifier.eissn2053-1583
dc.publisher.urlhttp://dx.doi.org/10.1088/2053-1583/3/1/015010
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/K01711X/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/K017144/1)
pubs.funder-project-idEuropean Commission (604391)
cam.issuedOnline2016-02-18
rioxxterms.freetoread.startdate2017-02-19


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