POLARONIC HAMILTONIAN AND POLAR OPTICAL VIBRATIONS IN MULTILAYER STRUCTURES

A theory of polar optical vibrations in multilayer semiconductor struc tures is developed taking into account phonon dispersion. A method of diagonalization of the equations of motion for inertial polarization v ectors in the finite basis is used, that is founded on a finite number of degrees of freedom of the system. The Hamiltonian of the electron- phonon interaction is deduced. The dispersion law and the spatial depe ndence of the obtained eigenmodes are in good agreement with experimen tal data and microscopic models. It is shown that the electron scatter ing rate in a magnetic field depends on the chosen model of polar opti cal vibrations.