Quantum kinetic equation and universal conductance fluctuations in graphene

Details Quantum kinetic equation and universal conductance fluctuations in graphene Quantum kinetic equation and universal conductance fluctuations in graphene

2008-01-15

arxiv.org/abs/0801.2394v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure; added references

Scientific paper

10.1103/PhysRevB.77.193403

We analyze universal conductance fluctuations (UCF) in graphene in the framework of diagrammatic perturbation theory in the metallic regime. It is shown that strong inter-valley scattering lifts the valley degeneracy of electronic states, whereas at weak inter-valley scattering two valleys contribute independently such that the variance of UCF would be expected to show sample- and geometry-dependent behavior.

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