TRANSFER-MATRIX METHOD FOR INTERFACE OPTICAL-PHONON MODES IN MULTIPLE-INTERFACE HETEROSTRUCTURE SYSTEMS

Interactions of carriers with interface optical phonons dominate over other carrier-phonon scatterings in narrow quantum-well structures. He rein, a transfer matrix method is used to establish a formalism for de termining the dispersion relations, electrostatic potentials, and Froh lich interaction Hamiltonians of the interface optical phonons for mul tiple-interface heterostructure systems within the framework of the ma croscopic dielectric continuum model. This method facilitates systemat ic calculations for complex structures where the conventional method i s very difficult to implement. Several specific cases are treated to i llustrate the advantages of the general formalism. (C) 1997 American I nstitute of Physics.