Photoassisted sequential resonant tunneling through superlattices

摘要

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