A hydrodynamic model is used to determine the finite thickness effect of the electron layers on the plasmon dispersion relation of GaAs-Al_xGa_1 - _xAs superlattice. Although the model which includes layer thickness gives only small changes from the z...
A hydrodynamic model is used to determine the finite thickness effect of the electron layers on the plasmon dispersion relation of GaAs-Al_xGa_1 - _xAs superlattice. Although the model which includes layer thickness gives only small changes from the zero thickness(two-dimensional) model, they are just enough to remove the discrepancy between the theory based on two-dimensional model and experiment. Assuming that the main damping mechanism for the line width broadening of the transmission spectroscopy is the collision, the result of this work could be applied to find the resisitivity of semiconductor superlattice without probing by Helicon wave propagation method.