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Spectroscopic measurement of large exchange...
Journal article

Spectroscopic measurement of large exchange enhancement of a spin-polarized 2D electron gas

Abstract

Exchange enhancements of the spin-polarized 2D electron gas are determined for the first time by inelastic light scattering from spin-flip inter-Landau-level and intersubband excitations. In the magnetic quantum limit ν=1 the splitting between long wavelength magnetoplasmons and spin-flip inter-Landau-level excitations is a direct spectroscopic measurement of the enhanced exchange energy. At ν=1 the enhancements in GaAs quantum wells are in …

Authors

Pinczuk A; Dennis BS; Heiman D; Kallin C; Brey L; Tejedor C; Schmitt-Rink S; Pfeiffer LN; West KW

Journal

Physical Review Letters, Vol. 68, No. 24, pp. 3623–3626

Publisher

American Physical Society (APS)

Publication Date

June 15, 1992

DOI

10.1103/physrevlett.68.3623

ISSN

0031-9007