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Quantum Monte Carlo study of electrostatic potential in graphene

Astrakhantsev, N. Yu. ; Braguta, V. V. ; Katsnelson, M. I. ; Nikolaev, A. A. ; Ulybyshev, M. V.



Abstract

In this paper the interaction potential between static charges in suspended graphene is studied within the quantum Monte Carlo approach. We calculated the dielectric permittivity of suspended graphene for a set of temperatures and extrapolated our results to zero temperature. The dielectric permittivity at zero temperature is found to have the following properties. At zero distance epsilon = 2.24 ...

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