Advances in Condensed Matter Physics
Volume 2017 (2017), Article ID 2435857, 8 pages
https://doi.org/10.1155/2017/2435857
The Tunnelling Current through Oscillating Resonance and the Sisyphus Effect
Department of Electrical and Electronics Engineering, Ariel University, Ariel, Israel
Correspondence should be addressed to Er’el Granot; li.ca.leira@lere
Received 19 February 2017; Accepted 29 March 2017; Published 11 April 2017
Academic Editor: Sergei Sergeenkov
Copyright © 2017 Er’el Granot. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The tunnelling current through an oscillating resonance level is thoroughly investigated exactly numerically and with several approximations—analytically. It is shown that while the oscillations can increase the tunnelling current (and in several cases the increase is exponentially large), their main effect is to reduce it dramatically at certain energies. In fact, the current in the presence of the oscillations cannot increase the maximum current of the adiabatic solution. That is why, while the elevator effect does occur in this system, the Sisyphus effect is the more dominant and prominent one.