title: Exact results for nonlinear ac transport through a resonant level model.
abstract: 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.
authors.affiliation: Physics Department, Arnold Sommerfeld Center for Theoretical Physics, and Center for NanoScience, Ludwig-Maximilians-Universität, Theresienstrasse 37, D-80333 Munich, Germany. pei.wang@physik.lmu.de
authors.forename: P
authors.initials: P
authors.lastname: Wang
authors.forename: M
authors.initials: M
authors.lastname: Heyl
authors.forename: S
authors.initials: S
authors.lastname: Kehrein
mesh_terms: D000465:Algorithms; D015233:Models, Statistical; D036103:Nanotechnology / Q000379:methods*; D009991:Oscillometry / Q000379:methods; D017785:Photons; D010825:Physics / Q000379:methods; D045663:Quantum Dots; D011789:Quantum Theory; D013997:Time Factors