闪锌矿和纤锌矿GaN/AlN量子阱中极化子性质的比较

he properties of polarons in zinc-blende and wurtzite GaN/AlN quantum wells with Fr?hlich interaction Hamiltonians are compared in detail. The energy shifts of polarons at ground states due to the interface (IF), confined (CO) and half-space phonon modes are calculated by the LLP variational method. It is found that the two Fr?hlich interaction Hamiltonians are consistent with each other when the anisotropic effect from the z-direction and the x-y plane is neglected. The influence from the anisotropy on the polaron energy shifts due to the IF phonon modes for a smaller well width or due to the CO phonon modes for a moderate well width is obvious. Besides, the built-in electric field has a remarkable effect on the polaron energy shifts contributed by the various phonon modes.