Weak antilocalization of composite fermions in graphene

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Laitinen, Antti
dc.contributor.author Kumar, Manohar
dc.contributor.author Hakonen, Pertti J.
dc.date.accessioned 2018-04-04T09:37:04Z
dc.date.available 2018-04-04T09:37:04Z
dc.date.issued 2018-02-08
dc.identifier.citation Laitinen , A , Kumar , M & Hakonen , P J 2018 , ' Weak antilocalization of composite fermions in graphene ' Physical Review B , vol 97 , no. 7 , 075113 , pp. 1-5 . DOI: 10.1103/PhysRevB.97.075113 en
dc.identifier.issn 2469-9950
dc.identifier.issn 1550-235X
dc.identifier.other PURE UUID: 525003f7-fd3b-480b-a71a-3faa9d12acdc
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/weak-antilocalization-of-composite-fermions-in-graphene(525003f7-fd3b-480b-a71a-3faa9d12acdc).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85042153613&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/18497251/PhysRevB.97.075113.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/30572
dc.description.abstract We demonstrate experimentally that composite fermions in monolayer graphene display weak antilocalization. Our experiments deal with fractional quantum Hall (FQH) states in high-mobility, suspended graphene Corbino disks in the vicinity of ν=1/2. We find a strong temperature dependence of conductivity σ away from half filling, which is consistent with the expected electron-electron interaction-induced gaps in the FQH state. At half filling, however, the temperature dependence of conductivity σ(T) becomes quite weak, as anticipated for a Fermi sea of composite fermions, and we find a logarithmic dependence of σ on T. The sign of this quantum correction coincides with the weak antilocalization of graphene composite fermions, indigenous to chiral Dirac particles. en
dc.format.extent 1-5
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation info:eu-repo/grantAgreement/EC/H2020/670743/EU//QuDeT
dc.relation.ispartofseries Physical Review B en
dc.relation.ispartofseries Volume 97, issue 7 en
dc.rights openAccess en
dc.subject.other Electronic, Optical and Magnetic Materials en
dc.subject.other Condensed Matter Physics en
dc.subject.other 114 Physical sciences en
dc.title Weak antilocalization of composite fermions in graphene en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics
dc.subject.keyword Electronic, Optical and Magnetic Materials
dc.subject.keyword Condensed Matter Physics
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201804042035
dc.identifier.doi 10.1103/PhysRevB.97.075113
dc.type.version publishedVersion

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