Exchange induced charge inhomogeneities in rippled neutral graphene

Abstract

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.

4 pages, two figures included

References in corpus (10)

• Electric Field Effect in Atomically Thin Carbon Films
• Two Dimensional Atomic Crystals
• The structure of suspended graphene sheets
• Atomic Structure of Graphene on SiO2
• Carrier transport in 2D graphene layers
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Cited by in corpus (11)

• Suspended Graphene: a bridge to the Dirac point
• Ripple Texturing of Suspended Graphene Atomic Membranes
• Breakdown of continuum mechanics for nanometer-wavelength rippling of graphene
• Colloquium: Graphene spectroscopy
• Transmitter and Receiver Architectures for Molecular Communications: A Survey on Physical Design with Modulation, Coding and Detection Techniques
• Ground-state of graphene in the presence of random charged impurities
• Density inhomogeneity driven percolation metal-insulator transition and dimensional crossover in graphene nanoribbons
• Effective medium theory for disordered two-dimensional graphene
• Gauge fields and curvature in graphene
• Electron supercollimation in graphene and Dirac fermion materials using one-dimensional disorder potentials
• Landau level splitting due to graphene superlattices