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arXiv · 0711.3511

Effect of disorder on the ground-state properties of graphene

R. Asgari·M. M. Vazifeh·M. R. Ramezanali·E. Davoudi·B. Tanatar
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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. Mode-coupling approach to scattering rate and random-phase approximation for ground-state energy incorporating the many-body interactions and the disorder effects yields good agreement with experimental inverse compressibility.

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R. Asgari, M. M. Vazifeh, M. R. Ramezanali, E. Davoudi, B. Tanatar. 2008-02-05. Effect of disorder on the ground-state properties of graphene. https://doi.org/10.1103/physrevb.77.125432

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