paper

Coulomb Drag and Magnetotransport in Graphene Double Layers

arXiv:1206.2854 · doi:10.1016/j.ssc.2012.04.032

Abstract

We review the fabrication and key transport properties of graphene double layers, consisting of two graphene monolayers placed in close proximity, independently contacted, and separated by an ultra-thin dielectric. We outline a simple band structure model relating the layer densities to the applied gate and inter-layer biases, and show that calculations and experimental results are in excellent agreement both at zero and in high magnetic fields. Coulomb drag measurements, which probe the electron-electron scattering between the two layers reveal two distinct regime: (i) diffusive drag at elevated temperatures, and (ii) mesoscopic fluctuation-dominated drag at low temperatures. We discuss the Coulomb drag results within the framework of existing theories.

arXiv comment9 pages, 6 figures

References in corpus (29)

Cited by in corpus (43)