Electrostatic interactions between graphene layers and their environment

J. Sabio, C. Seoánez, S. Fratini, F. Guinea, A. H. Castro Neto, and F. Sols
Phys. Rev. B 77, 195409 – Published 6 May 2008

Abstract

We analyze the electrostatic interactions between a single graphene layer and a SiO2 substrate, and other materials which may exist in its environment. We obtain that the leading effects arise from the polar modes at the SiO2 surface, and water molecules, which may form layers between the graphene sheet and the substrate. The strength of the interactions implies that graphene is pinned to the substrate at distances greater than a few lattice spacings. The implications for graphene nanoelectromechanical systems, and for the interaction between graphene and a scanning tunneling microscopy tip, are also considered.

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  • Received 19 December 2007

DOI:https://doi.org/10.1103/PhysRevB.77.195409

©2008 American Physical Society

Authors & Affiliations

J. Sabio1, C. Seoánez1, S. Fratini1,2, F. Guinea1, A. H. Castro Neto3, and F. Sols4

  • 1Instituto de Ciencia de Materiales de Madrid (CSIC), Sor Juana Inés de la Cruz 3, E-28049 Madrid, Spain
  • 2Institut Néel-CNRS and Université Joseph Fourier, BP 166, F-38042 Grenoble, Cedex 9, France
  • 3Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
  • 4Departamento de Física de Materiales, Universidad Complutense de Madrid, E-28040 Madrid, Spain

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Issue

Vol. 77, Iss. 19 — 15 May 2008

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