Transient currents of a single molecular junction with a vibrational mode
arXiv:1509.06120 · doi:10.1088/0953-8984/28/6/065301
Abstract
By using a propagation scheme for current matrices and an auxiliary mode expansion method, we investigate the transient dynamics of a single molecular junction coupled with a vibrational mode. Our approach is based on the Anderson-Holstein model and the dressed tunneling approximation for the electronic self-energy in the polaronic regime. The time-dependent currents after a sudden switching on the tunneling to leads and an abrupt upward step bias pulse are calculated. We show that the strong electron-phonon interaction greatly influences the nonlinear response properties of the system, and gives rise to interesting characteristics on the time traces of transient currents.
8 pages, 5 figures
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Cited by in corpus (5)
- A many-body approach to transport in quantum systems: From the transient regime to the stationary state
- Timescale separation solution of Kadanoff-Baym equations for quantum transport in time-dependent fields
- Short time dynamics of molecular junctions after projective measurement
- Emergence of negative viscosities and colored noise under current-driven Ehrenfest molecular dynamics
- Attenuation and amplification of the transient current in nanojunctions with time-varying gate potentials