Impurity-Bound Polarons in Double Quantum Wells in Magnetic Fields

Chuan-Yu Chen；Pei-Wan Jin；Yi Wang；Jing Zhou；D. L. Lin

Chinese Journal of Physics

37卷2期（1999 / 04 / 01）

196 - 203

英文

Energy levels of a polaron bound indirectly to impurity ions in a double quantum well system are calculated in the adiabatic approximation by means of a perturbation method, in which the unperturbed system is treated by the variational theory of Lee- Low-Pines. The polaron binding energy as well as impurity energy levels are studied for variable well width, barrier thickness and magnetic fields. It is shown that the electron-phonon interaction contributes greatly to the binding energy and must not be ignored in a system of double quantum wells in any case.