Exact results for nonlinear ac-transport through a resonant level model

Details Exact results for nonlinear ac-transport through a resonant level model Exact results for nonlinear ac-transport through a resonant level model

2010-03-18

arxiv.org/abs/1003.3644v1

J. Phys.: Condens. Matter 22 (2010) 275604

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages

Scientific paper

We obtain exact results for the transport through a resonant level model (noninteracting Anderson impurity model) for rectangular voltage bias as a function of time. We study both the transient behavior after switching on the tunneling at time t = 0 and the ensuing steady state behavior. Explicit expressions are obtained for the ac-current in the linear response regime and beyond for large voltage bias. Among other effects, we observe current ringing and PAT (photon assisted tunneling) oscillations.

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