Photoassisted sequential resonant tunneling through superlattices

TL;DR

This paper presents a theoretical model for photoassisted tunneling in superlattices under AC fields, revealing new tunneling channels and aligning well with experimental data.

Contribution

A novel transfer Hamiltonian-based model for sequential resonant tunneling under photoassisted conditions in superlattices.

Findings

Identification of new effective tunneling channels due to photoinduced sidebands.

Good agreement between theoretical predictions and experimental results.

Abstract

We have analyzed theoretically the photoassisted tunneling current through a superlattice in the presence of an AC potential. For that purpose we have developed a new model to calculate the sequential resonant currrent trhough a superlattice based in the TRansfer Hamiltonian Method. The tunneling current presents new features due to new effective tunneling chanels coming from the photoside bands induced by the AC field. Our theoretical results are in good agreement with the available experimental evidence.