POLARON ENERGY AND EFFECTIVE-MASS IN A QUANTUM-WELL

In this paper, the Lee-Low-Pines(LLP) variational method and the effec tive mass approximation are adopted to calculate the polaron energy an d effective mass in a finitely high barrier quantum well (QW). Because of the confinement of the QW to the electron, the exact wave function of an electron in a finitely deep potential well has been used for th e calculation. Therefore, the influence of the barrier height on the p olaron properties is taken into account. A comparison is made with the results of the quantum well with an infinitely high barrier.