Time-resolved photoluminescence in the fractional quantum Hall regime

D. Heiman, A. Pinczuk, M. Dahl, B. S. Dennis, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

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Photoluminescence (PL) spectra from excitons in the 2D electron layer in GaAs shows anomalous behavior that reflects the intrinsic properties of the strongly interacting 2D electron system. In the regime of the fractional quantum Hall effect an additional spectral peak is observed for Landau filling factor v< 1 2. At v = 1 3 a dramatic transfer of intensity between the peaks is observed which is coincident with a sharp increase in the PL decay times. This effect is influenced by changes in electron-hole overlap as a result of changes in the polarizability of the Laughlin fluid/electron gas. In the extreme quantum limit v< 1 4, the PL decay time for the higher-energy peak decreases while the lower-energy peak decay time increases.

Original languageEnglish (US)
Pages (from-to)50-54
Number of pages5
JournalSurface Science
Issue number1-3
StatePublished - Mar 20 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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