The effective Hamiltonian of an interface magnetopolaron is derived and its properties are discussed by using Larsen’s perturbational method. The results show that in the case of a repulsive image potential, a ‘‘dead’’ layer of magnetopolarons is formed, the thickness of which decreases when the strength of the magnetic field increases. In the case of an attractive image potential, there is a stable magnetopolaron near the interface. However, its ground-state energy increases with the increase of the magnetic field. The reduction of its binding energy and the increase of the distance between the polaron and the interface are both as expected.

• Received 26 March 1987

DOI:https://doi.org/10.1103/PhysRevB.36.7977