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| Paper IPM / P / 8706 |
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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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