A self-consistent microscopic model of Coulomb interaction in a bilayer system as an origin of Drag Effect Phenomenon

Gueven K. , Siddiki A., Krishna P. M. , Hakioglu T.

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, vol.40, no.5, pp.1169-1171, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 5
  • Publication Date: 2008
  • Doi Number: 10.1016/j.physe.2007.08.150
  • Page Numbers: pp.1169-1171


In this work we implement the self-consistent Thomas-Fermi model that also incorporates a local conductivity model to an electron-electron bilayer system, in order to describe novel magneto-transport properties such as the Drag Phenomenon. The model can successfully account for the poor screening of the potential within the incompressible strips and its impact on the inter-layer Coulomb interaction. An externally applied current in the active layer results in the tilting of the Landau levels and built-up of a Hall potential across the layer, which, in turn, induces a tilted potential profile in the passive layer as well. We investigate the effect of the current intensity, temperature, magnetic field, and unequal density of layers on the self-consistent density and potential profiles of the bilayer system. (C) 2007 Elsevier B.V. All rights reserved.