Electronic energy state and transmission properties study of triple barrier parabolic double quantum well

Abstract

We investigate transmission properties of triple barrier parabolic double quantum well structure using the non-equilibrium Green's function method. In particular, we examine the effect of system parameters on transmission coefficient. The properties of the electronic state are also studied as a function of the system parameters (such as the well and barrier widths) and electric field bias. We also tested energy electronic state with calculating the density of states. It has been found that the first resonant peaks shift towards the lower energy region as the middle barrier width increases. New resonant peaks emerge when the well widths or depths become wider. These structures are useful for the design of electronic devices.