Optical investigations of the integer and fractional quantum Hall effects: Energy plateaus, intensity minima, and line splitting in band-gap emission

B. B. Goldberg*, D. Heiman, A. Pinczuk, L. Pfeiffer, K. West

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

187 Scopus citations

Abstract

Plateaus in the electron-hole recombination energy and minima in the peak intensity at integer and fractional filling factors occur in the luminescence from ultrahigh-mobility GaAs single quantum wells. At Landau and spin gaps the regions of plateaus and intensity minima broaden as the temperature is reduced, in consort with the transport Hall resistance. A sharp intensity minimum and peak shift is seen at =2/3, while higher-field fractions are characterized by a splitting in the luminescence. The optical anomalies are directly related to the position of the Fermi energy in localized transport states.

Original languageEnglish (US)
Pages (from-to)641-644
Number of pages4
JournalPhysical review letters
Volume65
Issue number5
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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