Exchange enhancement of a spin-polarized 2D electron gas determined by optical-absorption spectroscopy

B. B. Goldberg*, D. Heiman, A. Pinczuk

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

A large exchange enhancement of the spin-splitting of a two-dimensional electron gas in GaAs has been determined from optical spectroscopy. When the Fermi energy is located between the spin-split electron states (=1), we observe a striking temperature dependence in the optical absorption of interband transitions associated with both spin levels. The absorption intensity of the transitions monitors the occupations of the spin-split levels. Analysis of the temperature dependence reveals an exchange enhancement of the electron g factor of 9.. AE

Original languageEnglish (US)
Pages (from-to)1102-1105
Number of pages4
JournalPhysical Review Letters
Volume63
Issue number10
DOIs
StatePublished - Jan 1 1989

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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