INTERACTION OF POLAR-OPTICAL PHONONS WITH A 2-DIMENSIONAL ELECTRON-GAS

The interaction Hamiltonian for a two-dimensional electron gas with optical phonons was obtained, for an electron gas on the interface of a polar semiconductor in a metal-insulator-semiconductor device. We found that the electron-phonon interaction is proportional to the inverse square root of the phonon wave number. The dependence of the electron-phonon coupling constant on the dielectric constant of the insulator is determined. © 1979.