2 research outputs found
Hierarchical quantum master equation approach to charge transport in molecular junctions with time-dependent molecule-lead coupling strengths
Time-dependent currents in molecular junctions can be caused by structural
fluctuations or interaction with external fields. In this publication, we
demonstrate how the hierarchical quantum master equation approach can be used
to study time-dependent transport in a molecular junction. This reduced density
matrix methodology provides a numerically exact solution to the transport
problem including time-dependent energy levels, molecule-lead coupling
strengths and transitions between electronic states of the molecular bridge.
Based on a representative model, the influence of a time-dependent
molecule-lead coupling on the electronic current is analyzed in some detail