JETP Letters

, Volume 84, Issue 10, pp 556–559 | Cite as

Exciton spectrum for two-dimensional electron systems at fractional occupation numbers of the Landau levels

  • S. V. Iordanskiĭ
  • A. B. Kashuba
Condensed Matter


It is shown that q absorption lines arise in two-dimensional crystal lattices at a rational fractional number p/q of magnetic-field flux quanta per electron. The absorption lines correspond to different exciton formation energies and are determined by the electron-hole Coulomb interaction. The number of the absorption lines is calculated for electron densities corresponding to the fractional quantum Hall effect.

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Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

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

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