Self-consistent Coulomb picture of an electron-electron bilayer system

Details Self-consistent Coulomb picture of an electron-electron bilayer system Self-consistent Coulomb picture of an electron-electron bilayer system

2006-08-31

arxiv.org/abs/cond-mat/0608736v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 12 figures, submitted to PRB

Scientific paper

In this work we implement the self-consistent Thomas-Fermi approach and a local conductivity model to an electron-electron bilayer system. The presence of an incompressible strip, originating from screening calculations at the top (or bottom) layer is considered as a source of an external potential fluctuation to the bottom (or top) layer. This essentially yields modifications to both screening properties and the magneto-transport quantities. The effect of the temperature, inter-layer distance and density mismatch on the density and the potential fluctuations are investigated. It is observed that the existence of the incompressible strips plays an important role simply due to their poor screening properties on both screening and the magneto-resistance (MR) properties. Here we also report and interpret the observed MR Hysteresis within our model.

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