Multicomponent dense electron gas as a model of Si MOSFET

  • S. V. Iordanski
  • A. Kashuba
Condensed Matter


We solve a 2D model of N-component dense electron gas in the limit N→∞ and in the range of the Coulomb interaction parameter N−3/2r s ≪1. The quasiparticle interaction on the Fermi circle vanishes as ℏ2/Nm. The ground-state energy and the effective mass are found as series in powers of r s 2/3 . In the quantum Hall state on the lowest Landau level at integer filling 1≪ν<N, the charge-activation-energy gap and the exchange constant are Δ=log(r s N3/2)ℏωH/ν and J=0.66ℏωH/ν.

PACS numbers

71.10.Ca 73.43.Cd 85.30.Tv 


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Copyright information

© MAIK "Nauka/Interperiodica" 2002

Authors and Affiliations

  • S. V. Iordanski
    • 1
  • A. Kashuba
    • 1
  1. 1.Landau Institute for Theoretical PhysicsRussian Academy of SciencesMoscowRussia

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