Abstract
We demonstrate an asymmetric dependence of the spin-flip electronic Raman spectrum from a two-dimensional electron gas on the direction of circular polarization of the photons, resulting from an interference of light scattered from longitudinal and transverse spin-density fluctuations. By exploiting these selection rules, we are able to determine experimentally that the sign of the band-structure parameter which describes the bulk conduction-band spin splitting in zinc-blende semiconductors, is negative for GaAs.
- Received 9 July 1998
DOI:https://doi.org/10.1103/PhysRevB.59.R2506
©1999 American Physical Society