Screening Model of Magnetotransport Hysteresis Observed in Bilayer Quantum Hall Systems

Details Screening Model of Magnetotransport Hysteresis Observed in Bilayer Quantum Hall Systems Screening Model of Magnetotransport Hysteresis Observed in Bilayer Quantum Hall Systems

2006-07-27

arxiv.org/abs/cond-mat/0607724v1

Physica E, vol. 34, pg 136-139, 2006

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 4 figures, to appear in Physica E

Scientific paper

10.1016/j.physe.2006.03.096

We report on theoretical and experimental investigations of a novel hysteresis effect that has been observed on the magnetoresistance of quantum-Hall bilayer systems. Extending to these system a recent approach, based on the Thomas-Fermi-Poisson nonlinear screening theory and a local conductivity model, we are able to explain the hysteresis as being due to screening effects such as the formation of ``incompressible strips'', which hinder the electron density in a layer within the quantum Hall regime to reach its equilibrium distribution.

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