“School of Physics”
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| Paper IPM / P / 6730 |
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| Abstract: | |||||||
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An effective field theoretic description of ν = 1 bilayer
electron systems stabilized by Coulomb repulsion in a single wide
quantum well is examined using renormalization group techniques.
The system is found to undergo a crossover from a low temperature
strongly correlated quantum Hall state to a high temperature
compressible state. This picture is used to account for the recent
experimental observation of an anomalous transition in bilayer
electron systems (T. S. Lay, et al. Phys. Rev. B 50,
17725 (1994)). An estimate for the crossover temperature is
provided, and it is shown that its dependence on electron density
is in reasonable agreement with i the experiment.
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