Transition between electron localisation and antilocalisation in graphene

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dc.creatorTikhonenko, F. V.
dc.creatorKozikov, A. A.
dc.creatorSavchenko, A. K.
dc.creatorGorbachev, R. V.
dc.date2009-03-25
dc.date.accessioned2026-07-07T12:56:58Z
dc.date.available2026-07-07T12:56:58Z
dc.descriptionThe wave nature of electrons in low-dimensional structures manifests itself in conventional electrical measurements as a quantum correction to the classical conductance. This correction comes from the interference of scattered electrons which results in electron localisation and therefore a decrease of the conductance. In graphene, where the charge carriers are chiral and have an additional (Berry) phase of π, the quantum interference is expected to lead to anti-localisation: an increase of the conductance accompanied by negative magnetoconductance (a decrease of conductance in magnetic field). Here we observe such negative magnetoconductance which is a direct consequence of the chirality of electrons in graphene. We show that graphene is a unique two-dimensional material in that, depending on experimental conditions, it can demonstrate both localisation and anti-localisation effects. We also show that quantum interference in graphene can survive at unusually high temperatures, up to T~200 K.
dc.identifierhttps://arxiv.org/abs/0903.4489
dc.identifierhttp://arxiv.org/abs/0903.4489
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224771
dc.subjectMesoscale and Nanoscale Physics
dc.subjectDisordered Systems and Neural Networks
dc.subjectMaterials Science
dc.titleTransition between electron localisation and antilocalisation in graphene
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