Correlation between charge inhomogeneities and structure in graphene and other electronic crystalline membranes

Doron Gazit*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

Only one atom thick and not inclined to lattice defects, graphene represents the ultimate crystalline membrane. However, its structure reveals unique features not found in other crystalline membranes, in particular the existence of ripples with wavelength of 100-300Å. Here, I trace the origin of this difference to the free electrons in the membrane. The deformation energy of the lattice creates a coupling between charge fluctuations and the structure, resulting in ripples on the membrane, correlated with charge inhomogeneities. In graphene this mechanism reproduces the experimental result for both charge puddles and ripples.

Original languageAmerican English
Article number161406
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number16
DOIs
StatePublished - 15 Oct 2009
Externally publishedYes

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