A calculation of the amplitude for longitudinal-optical phonon scattering between hole Landau levels induced by the Fröhlich interaction is presented. This amplitude, forbidden in the dipole approximation, is proportional to (qR0)2 in the limit of high magnetic field, where R0 is the Landau length and q the phonon wave vector along the magnetic field. The interband Fröhlich scattering brings about double resonances, observable in magneto-Raman spectra, which are comparable to those induced by the deformation-potential interaction. Such resonances have been experimentally studied in GaAs with backscattering Faraday configurations with q along a cubic axis.

INTER-LANDAU-LEVEL SCATTERING IN THE VALENCE BAND OF ZINCBLENDE SEMICONDUCTORS INDUCED BY THE FROHLICH INTERACTION

LA ROCCA, Giuseppe Carlo;
1990

Abstract

A calculation of the amplitude for longitudinal-optical phonon scattering between hole Landau levels induced by the Fröhlich interaction is presented. This amplitude, forbidden in the dipole approximation, is proportional to (qR0)2 in the limit of high magnetic field, where R0 is the Landau length and q the phonon wave vector along the magnetic field. The interband Fröhlich scattering brings about double resonances, observable in magneto-Raman spectra, which are comparable to those induced by the deformation-potential interaction. Such resonances have been experimentally studied in GaAs with backscattering Faraday configurations with q along a cubic axis.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/2685
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