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LO-phonon Raman line in magnetic field

1974; Elsevier BV; Volume: 15; Issue: 11-12 Linguagem: Francês

10.1016/0038-1098(74)90094-5

1879-2766

S. Frota-Pessôa, Roberto Luzzi,

Mechanical and Optical Resonators

Raman scattering by LO-phonons in the presence of a constant magnetic field is considered. The effect of the electron-phonon interaction on the Raman line is studied. It is shown that significant effects appear when, for certain experimental geometries, a harmonic of the cyclotron frequency equals the LO-phonon frequency. The frequency shift and line shape are discussed and application to GaAs is made. Nous etudions l'effet d'interaction electron-fonon sur ligne Raman dans la diffusion Raman de fonons optiques longitudinales en presence d'un champ magnetique constant. Nous montrons que des effets significatifs appraissent quan, pour des determinées geometries experimentales, un harmonique de la frequence de ciclotron est egale a celle du fonon longitudinale. On a fait une etude du deplacement et de la forme de la ligne Raman et une aplication au cas du GaAs.