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Paper   IPM / Physic / 6730
School of Physics
  Title:   Finite-Temperature Behavior of the ν = 1 Quantum Hall Effect in Bilayer Electron Systems
1.  R. Golestanian
2.  T. Jungwirth
3.  M. Abolfath
  Status:   Published
  Journal: Phys. Rev. B
  Vol.:  61
  Year:  2000
  Pages:   4762-4765
  Supported by:  IPM
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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