Electrostatic interactions between graphene layers and their environment

Details Electrostatic interactions between graphene layers and their environment Electrostatic interactions between graphene layers and their environment

2007-12-13

arxiv.org/abs/0712.2232v3

Phys. Rev. B vol. 77, 195409 (2008)

Physics

Condensed Matter

Materials Science

improved introduction, section on suspended graphene corrected

Scientific paper

10.1103/PhysRevB.77.195409

We analyze the electrostatic interactions between a single graphene layer and a SiO$_2$ susbtrate, and other materials which may exist in its environment. We obtain that the leading effects arise from the polar modes at the SiO$_2$ 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 STM tip are also considered.

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