Magnetopolaron effect in parabolic quantum wells in tilted magnetic fields

The magnetopolaron is investigated in parabolic quantum wells in the presence of a tilted magnetic field. The Landau levels of polarons in $\mathrm{GaAs}/{\mathrm{Ga}}_{1-x}{\mathrm{Al}}_x\mathrm{As}$ parabolic quantum wells are calculated for different subbands. The effect of the electron-phonon interaction on the polaron energy levels is included within second-order perturbation theory. The influence of the direction of the magnetic field on the polaron effect on the different electron energy levels is studied. Possible magnetopolaron resonances are also discussed.