Abstract
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 both on the screening properties and on the magnetotransport quantities. The effects of the temperature, interlayer 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 both on the screening and the magnetoresistance properties. Here we also report on and interpret the observed magnetoresistance hysteresis within our model.
5 More- Received 31 August 2006
DOI:https://doi.org/10.1103/PhysRevB.75.155311
©2007 American Physical Society