Spectroscopic measurement of large exchange enhancement of a spin-polarized 2D electron gas
- 15 June 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 68 (24) , 3623-3626
- https://doi.org/10.1103/physrevlett.68.3623
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 agreement with the Hartree-Fock approximation.This publication has 23 references indexed in Scilit:
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