Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102038
Title: Quantum Monte Carlo study of electrostatic potential in graphene
Authors: Astrakhantsev, N. Y.
Braguta, V. V.
Katsnelson, M. I.
Nikolaev, A. A.
Ulybyshev, M. V.
Issue Date: 2018
Publisher: American Physical Society
Citation: Quantum Monte Carlo study of electrostatic potential in graphene / N. Y. Astrakhantsev, V. V. Braguta, M. I. Katsnelson, et al. — DOI 10.1103/PhysRevB.97.035102 // Physical Review B. — 2018. — Vol. 97. — Iss. 3. — 035102.
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 ϵ=2.24±0.02. Then it rises and at a large distance the dielectric permittivity reaches the plateau ϵ≃4.20±0.66. The results obtained in this paper allow us to draw a conclusion that full account of many-body effects in the dielectric permittivity of suspended graphene gives ϵ very close to the one-loop results. Contrary to the one-loop result, the two-loop prediction for the dielectric permittivity deviates from our result. So one can expect large higher order corrections to the two-loop prediction for the dielectric permittivity of suspended graphene. © 2018 American Physical Society.
Keywords: GRAPHENE
MONTE CARLO METHODS
DIELECTRIC PERMITTIVITIES
ELECTROSTATIC POTENTIALS
INTERACTION POTENTIALS
MANY-BODY EFFECT
QUANTUM MONTE CARLO
QUANTUM MONTE CARLO STUDIES
SUSPENDED GRAPHENE
ZERO TEMPERATURES
PERMITTIVITY
URI: http://hdl.handle.net/10995/102038
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85040255492
PURE ID: 6426582
0a0404c5-e401-4b97-9ef7-338b577b3860
ISSN: 24699950
DOI: 10.1103/PhysRevB.97.035102
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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