Optical transmission spectroscopy of the two-dimensional electron gas in GaAs in the quantum hall regime

B. B. Goldberg*, D. Heiman, M. J. Graf, D. A. Broido, A. Pinczuk, C. W. Tu, J. H. English, A. C. Gossard

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Optical transmission spectroscopy of a two-dimensional electron gas is shown to be a sensitive probe of the Fermi level and electronic density of states. Results are presented for interband transmission of modulation-doped GaAs multiple quantum wells in high magnetic fields. The appearance of new absorption transitions at even integral filling factors is the optical observation of quantum oscillations of the Fermi level of a two-dimensional electron gas. The broadening of the Landau level density of states is found to be 1.2B meV T-12 by fitting the Fermi level oscillations.

Original languageEnglish (US)
Pages (from-to)10131-10134
Number of pages4
JournalPhysical Review B
Volume38
Issue number14
DOIs
StatePublished - 1988

ASJC Scopus subject areas

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Optical transmission spectroscopy of the two-dimensional electron gas in GaAs in the quantum hall regime'. Together they form a unique fingerprint.

Cite this