Exchange induced charge inhomogeneities in rippled neutral graphene

Details Exchange induced charge inhomogeneities in rippled neutral graphene Exchange induced charge inhomogeneities in rippled neutral graphene

2007-07-16

arxiv.org/abs/0707.2358v1

Physical Review B {\bf 77} 041403(R) (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, two figures included

Scientific paper

10.1103/PhysRevB.77.041403

A new mechanism that induces charge density variations in corrugated graphene is proposed. Here it is shown how the interplay between lattice deformations and exchange interactions can induce charge separation, i.e., puddles of electrons and holes, for realistic deformation values of the graphene sheet. The induced charge density lies in the range of $10^{11}-10^{12}$ cm$^{-2}$, which is compatible with recent measurements.

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