Effect of disorder on the ground-state properties of graphene

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Abstract

We calculate the ground-state energy of Dirac electrons in graphene in the presence of disorder. We take randomly distributed charged impurities at a fixed distance from the graphene sheet and surface fluctuations (ripples) as the main scattering mechanisms. A mode-coupling approach to the scattering rate and random-phase approximation for the ground-state energy incorporating the many-body interactions and the disorder effects yields good agreement with the experimental inverse compressibility.

Source Title

Physical Review B - Condensed Matter and Materials Physics

Publisher

The American Physical Society

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Published Version (Please cite this version)

Language

English