title: Dynamic electronic response of a quantum dot driven by time-dependent voltage.
abstract: We present a comprehensive theoretical investigation on the dynamic electronic response of a noninteracting quantum dot system to various forms of time-dependent voltage applied to the single contact lead. Numerical simulations are carried out by implementing a recently developed hierarchical equations of motion formalism [J. S. Jin et al., J. Chem. Phys. 128, 234703 (2008)], which is formally exact for a fermionic system interacting with grand canonical fermionic reservoirs, in the presence of arbitrary time-dependent applied chemical potentials. The dynamical characteristics of the transient transport current evaluated in both linear and nonlinear-response regimes are analyzed, and the equivalent classic circuit corresponding to the coupled dot-lead system is also discussed.
authors.affiliation: Department of Chemistry, Hong Kong University of Science and Technology, Kowloon, Hong Kong. chxzheng@ust.hk
authors.forename: Xiao
authors.initials: X
authors.lastname: Zheng
authors.forename: Jinshuang
authors.initials: J
authors.lastname: Jin
authors.forename: YiJing
authors.initials: Y
authors.lastname: Yan