Time-dependent electron transport through the multi-terminal quantum dot
Abstract
We consider the time-dependent electron transport through a quantum dot connected to multiple leads in the presence of the additional over-dot (bridge) tunnelling channels by using the evolution operator technique. Each terminal and quantum dot are disturbed by an external oscillating field resulting in a time-dependence of the corresponding energy levels. The final analytical expressions for the currents flowing in the system are given assuming the wide-band limit approximation. We investigate also the transient-current characteristics in the case of the rectangular-pulse modulations imposed on the dot-lead barriers. The time-averaged current and its derivative with respect to the gate voltage have been calculated for a wide range of parameters.
Cite
@article{arxiv.cond-mat/0406642,
title = {Time-dependent electron transport through the multi-terminal quantum dot},
author = {R. Taranko and T. Kwapinski and E. Taranko},
journal= {arXiv preprint arXiv:cond-mat/0406642},
year = {2007}
}
Comments
8 pages, 3 postscript figures