Effects of inelastic-scattering on the current-voltage and shot noise characteristics in resonant tunneling structures

Abstract

We present a study of inelastic electron‐phonon scattering effects on the current and noise in double barrier resonant tunneling structures. Our approach is based on the nonequilibrium Green’s function method, treating the electron‐optical phonon interaction in the first order self‐consistent Born approximation. Our results shows that the current noise may be enhanced over the Poissonian noise due to the effect of phonon‐assisted tunneling. They also reveal that the strong dominance of the coherent tunneling current over the sequential one can destroy the super‐Poissonian picture of noise.