Browsing by Author "Zhang, Ting"

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Large-scale Mesoscopic Transport in Nanostructured Graphene
(2013-02-06)
Zhang, Haijing
;
Lu, Jianming
;
Shi, Wu
;
Wang, Zhe
;
Zhang, Ting
Through exponential sample-size scaling of conductance, we demonstrate strong electron localization in three sets of nanostructured antidot graphene samples with localization lengths of 1.1, 2, and 3.4 mu m. The large-scale mesoscopic transport is manifest as a parallel conduction channel to 2D variable range hopping, with a Coulomb quasigap around the Fermi level. The opening of the correlation quasigap, observable below 25 K through the temperature dependence of conductance, makes possible the exponential suppression of inelastic electron-electron scatterings and thereby leads to an observed dephasing length of 10 mu m. DOI: 10.1103/PhysRevLett.110.066805