Hanbury-Brown and Twiss exchange and non-equilibrium-induced correlations in disordered, four-terminal graphene-ribbon conductor

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Tan, Z. B.
dc.contributor.author Elo, T.
dc.contributor.author Puska, A.
dc.contributor.author Sarkar, J.
dc.contributor.author Lähteenmäki, P.
dc.contributor.author Duerr, F.
dc.contributor.author Gould, C.
dc.contributor.author Molenkamp, L. W.
dc.contributor.author Nagaev, K. E.
dc.contributor.author Hakonen, P. J.
dc.date.accessioned 2018-10-24T09:40:29Z
dc.date.available 2018-10-24T09:40:29Z
dc.date.issued 2018-12-01
dc.identifier.citation Tan , Z B , Elo , T , Puska , A , Sarkar , J , Lähteenmäki , P , Duerr , F , Gould , C , Molenkamp , L W , Nagaev , K E & Hakonen , P J 2018 , ' Hanbury-Brown and Twiss exchange and non-equilibrium-induced correlations in disordered, four-terminal graphene-ribbon conductor ' Scientific Reports , vol 8 , no. 1 , 14952 , pp. 1-10 . DOI: 10.1038/s41598-018-32777-5 en
dc.identifier.issn 2045-2322
dc.identifier.other PURE UUID: 94e54036-a8ce-4d4f-952d-0078505318a5
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/hanburybrown-and-twiss-exchange-and-nonequilibriuminduced-correlations-in-disordered-fourterminal-grapheneribbon-conductor(94e54036-a8ce-4d4f-952d-0078505318a5).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85054579866&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/28755649/s41598_018_32777_5.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/34473
dc.description.abstract We have investigated current-current correlations in a cross-shaped conductor made of graphene. The mean free path of charge carriers is on the order of the ribbon width which leads to a hybrid conductor where there is diffusive transport in the device arms while the central connection region displays near ballistic transport. Our data on auto and cross correlations deviate from the predictions of Landauer-Büttiker theory, and agreement can be obtained only by taking into account contributions from non-thermal electron distributions at the inlets to the semiballistic center, in which the partition noise becomes strongly modified. The experimental results display distinct Hanbury – Brown and Twiss (HBT) exchange correlations, the strength of which is boosted by the non-equilibrium occupation-number fluctuations internal to this hybrid conductor. Our work demonstrates that variation in electron coherence along atomically-thin, two-dimensional conductors has significant implications on their noise and cross correlation properties. en
dc.format.extent 1-10
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Scientific Reports en
dc.relation.ispartofseries Volume 8, issue 1 en
dc.rights openAccess en
dc.subject.other General en
dc.subject.other 114 Physical sciences en
dc.title Hanbury-Brown and Twiss exchange and non-equilibrium-induced correlations in disordered, four-terminal graphene-ribbon conductor en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Centre of Excellence in Quantum Technology, QTF
dc.contributor.department Aalto University
dc.contributor.department Department of Applied Physics
dc.contributor.department University of Würzburg
dc.contributor.department National Research University of Electronic Technology (MIET)
dc.subject.keyword General
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201810245535
dc.identifier.doi 10.1038/s41598-018-32777-5
dc.type.version publishedVersion

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