Regensburg 2016 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 58: Transport: Poster Session

TT 58.28: Poster

Wednesday, March 9, 2016, 15:00–18:30, Poster D

Time-dependent transport in molecular junctions using hierarchical quantum master equations — •André Erpenbeck, Christian Schinabeck, Lukas Götzendörfer, and Michael Thoss — Institut für Theoretische Physik und Interdisziplinäres Zentrum für Molekulare Materialien (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstr. 7/B2, D-91058 Erlangen, Germany

Time-dependent currents in molecular junctions can be caused by structural fluctuations or interaction with external fields. In this contribution, 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 an accurate solution to the transport problem including time-dependent energy levels, molecule-lead coupling strengths and transitions between electronic states of the molecular bridge. Employing representative models, the influence of such time-dependencies on the electronic current is analyzed in some detail.