Weak Localization in Graphene Flakes

F. V. Tikhonenko, D. W. Horsell, R. V. Gorbachev, A. K. Savchenko
2008 Physical Review Letters  
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
more » ... of graphene flakes affect the values of the elastic and inelastic rates and discuss their physical origin.
doi:10.1103/physrevlett.100.056802 pmid:18352407 fatcat:o4ix2rqy3nbhdabpjvrjkmpp7i