Screening model of magnetotransport hysteresis observed in bilayer quantum Hall systems |
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Authors: | Afif Siddiki Stefan Kraus Rolf R Gerhardts |
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Institution: | aMax-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany |
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Abstract: | 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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Keywords: | Electron bilayers Quantum Hall effect Hysteretic magnetoresistance |
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