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

A. Siddiki
Phys. Rev. B 75, 155311 – Published 10 April 2007

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.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
5 More
  • Received 31 August 2006

DOI:https://doi.org/10.1103/PhysRevB.75.155311

©2007 American Physical Society

Authors & Affiliations

A. Siddiki

  • Physics Department, Arnold Sommerfeld Center for Theoretical Physics, and CeNS, Ludwig-Maximilians-Universität München, Theresienstrasse 37, D-80333 München, Germany

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 75, Iss. 15 — 15 April 2007

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×