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arXiv · 1007.1017

Pinning of a two-dimensional membrane on top of a patterned substrate: the case of graphene

S. Viola Kusminskiy·D. K. Campbell·A. H. Castro Neto·F. Guinea
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Abstract

We study the pinning of a two-dimensional membrane to a patterned substrate within elastic theory both in the bending rigidity and in the strain dominated regimes. We find that both the in-plane strains and the bending rigidity can lead to depinning. We show from energetic arguments that the system experiences a first order phase transition between the attached configuration to a partially detached one when the relevant parameters of the substrate are varied, and we construct a qualitative phase diagram. Our results are confirmed through analytical solutions for some simple geometries of the substrate's profile.

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S. Viola Kusminskiy, D. K. Campbell, A. H. Castro Neto, F. Guinea. 2011-04-17. Pinning of a two-dimensional membrane on top of a patterned substrate: the case of graphene. https://doi.org/10.1103/physrevb.83.165405

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