Abstract
Within the framework of the continuum model, optical polarization modes of lattice vibrations and a Fröhlich-like Hamiltonian of the interaction between an electron and optical phonons are derived. It is found that there are four branches of interface optical modes besides the usual transverse-optical and longitudinal-optical modes. The frequencies of these modes and coupling functions of an electron with the optical phonons are discussed.
- Received 7 June 1990
DOI:https://doi.org/10.1103/PhysRevB.43.5155
©1991 American Physical Society