Nonlinear feedback oscillations in resonant tunneling through double barriers

TL;DR

This paper investigates how nonlinear feedback effects in resonant tunneling through double barriers cause oscillations in charge and flux, influenced by electrostatic feedback and energy distribution.

Contribution

It introduces a detailed analysis of nonlinear dynamical oscillations in resonant tunneling due to self-consistent potentials, highlighting their dependence on feedback and energy width.

Findings

Oscillations of charge and flux are caused by nonlinear feedback.

Self-consistent potential significantly influences tunneling dynamics.

Oscillation behavior depends on incident energy distribution.

Abstract

We analyze the dynamical evolution of the resonant tunneling of an ensemble of electrons through a double barrier in the presence of the self-consistent potential created by the charge accumulation in the well. The intrinsic nonlinearity of the transmission process is shown to lead to oscillations of the stored charge and of the transmitted and reflected fluxes. The dependence on the electrostatic feedback induced by the self-consistent potential and on the energy width of the incident distribution is discussed.