Raman scattering from phonon-plasmon modes in Ga1-xAlxAs

Becker, R. J.; Luehrmann, P. F.; Langer, D. W.
September 1985
Applied Physics Letters;9/1/1985, Vol. 47 Issue 5, p513
Academic Journal
The relation for the frequencies of phonon-plasmon modes in two-component solutions is presented. Raman spectra from over 80 samples of Ga1-xAlxAs over a wide range of x values and varying electron concentrations have been fitted to predicted curves using this relationship. Data were taken at both room and nitrogen temperature on samples grown by both metalorganic chemical vapor deposition and molecular beam epitaxy.


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