Optical Method for Determination of Carrier Density in Modulation Doped Quantum Wells
Preprint
- 30 November 2001
Abstract
An optical method is suggested to determine the concentration of two-dimensional electrons in modulation-doped quantum wells at low and moderate electron densities between 10^{9} and 2x10^{11} cm^{-2}. The method is based on an analysis of magneto-reflectivity spectra of charged excitons (trions). The circular polarization degree and the oscillator strength of the charged excitons contain information about the density and spin polarization of two-dimensional electron gas. The method is applied to CdTe/(Cd,Mg)Te and ZnSe/Zn,Mg)(S,Se) heterostructures.Keywords
All Related Versions
- Version 1, 2001-11-30, ArXiv
- Published version: Physical Review B, 65 (11), 115310.
This publication has 0 references indexed in Scilit: