Time-Dependent Transport through a Mesoscopic Structure
Condensed Matter
2009-10-22 v1
Abstract
We present a general formulation of the nonlinear, time-dependent current through a small interacting region, where electron energies are changed by time-dependent voltages. An exact solution is obtained for the non-interacting case when the elastic coupling to the leads is independent of energy. Temporal phase coherence in a double-barrier tunneling structure produces ``ringing" in the response of the current to a voltage pulse, which can be observed experimentally in the dc-current by varying the pulse length in a train of voltage pulses. The nonlinear current due to an ac-bias also shows complex time-dependence.
Cite
@article{arxiv.cond-mat/9301026,
title = {Time-Dependent Transport through a Mesoscopic Structure},
author = {Ned S. Wingreen and Antti-Pekka Jauho and Yigal Meir},
journal= {arXiv preprint arXiv:cond-mat/9301026},
year = {2009}
}
Comments
REVTEX, 12 pages + 2 postscript figures (also available as hard copies from [email protected]) Nordita preprint 93/7