SELF-TRAPPING TRANSITION OF ACOUSTIC POLARON IN SLAB
Abstract
Self-trapping transition of the acoustic polaron in slab is researched by calculating the polaron ground state energy and the first derivative of the ground state energy with respect to the electron–phonon coupling. It is indicated that the possibility of self-trapping transition for acoustic polaron in slab fall in between 3D and 2D systems. The electron may be self-trapped in slab systems of GaN, AlN and alkali halides, if the slab systems are thinner than one over ten of the length unit ℏ/mc.