Weak localisation in graphene flakes

Weak localisation in graphene flakes

We show that the manifestation of quantum interference in graphene is very different from that in conventional two-dimensional systems. Due to the chiral nature of charge carriers, it is sensitive not only to inelastic, phase-breaking scattering, but also to a number of elastic scattering processes....

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Veröffentlicht in:arXiv.org 2008-01
Hauptverfasser: Tikhonenko, F V, Horsell, D W, Gorbachev, R V, Savchenko, A K
Format: Artikel
Sprache:eng
Schlagworte:
Carrier density
Current carriers
Elastic scattering
Flakes
Graphene
Inelastic scattering
Physics - Materials Science
Physics - Mesoscale and Nanoscale Physics
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creator Tikhonenko, F V
Horsell, D W
Gorbachev, R V
Savchenko, A K
description We show that the manifestation of quantum interference in graphene is very different from that in conventional two-dimensional systems. Due to the chiral nature of charge carriers, it is sensitive not only to inelastic, phase-breaking scattering, but also to a number of elastic scattering processes. We study weak localization in different samples and at different carrier densities, including the Dirac region, and find the characteristic rates that determine it. We show how the shape and quality of graphene flakes affect the values of the elastic and inelastic rates and discuss their physical origin.
doi_str_mv 10.48550/arxiv.0707.0140
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subjects Carrier density
Current carriers
Elastic scattering
Flakes
Graphene
Inelastic scattering
Physics - Materials Science
Physics - Mesoscale and Nanoscale Physics
title Weak localisation in graphene flakes
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