W. Xiao et Jl. Xiao, THE INFLUENCE OF THE INTERACTION BETWEEN PHONONS ON THE PROPERTIES OFTHE EXCITON IN POLAR CRYSTALS, Physica status solidi. b, Basic research, 198(2), 1996, pp. 751-760
Some properties of excitons in polar crystals are studied. The effecti
ve Hamiltonian of the exciton in polar crystals is derived by a pertur
bation method. If we consider the interaction between phonons of diffe
rent wave vectors in the recoil process, the influence on the effectiv
e potential between electron and hole, the self-trapping energy, and t
he self-trapping condition are discussed.