Hierarchical quantum master equation approach to electronic-vibrational coupling in nonequilibrium transport through nanosystems

Journal article


Publication Details

Author(s): Schinabeck C, Erpenbeck A, Haertle R, Thoss M
Journal: Physical Review B
Publication year: 2016
Volume: 94
Journal issue: 20
ISSN: 1098-0121


Abstract

Within the hierarchical quantum master equation (HQME) framework, an approach is presented, which allows a numerically exact description of nonequilibrium charge transport in nanosystems with strong electronic-vibrational coupling. The method is applied to a generic model of vibrationally coupled transport considering a broad spectrum of parameters ranging from the nonadiabatic to the adiabatic regime and including both resonant and off-resonant transport. We show that nonequilibrium effects are important in all these regimes. In particular, in the off-resonant transport regime, the inelastic cotunneling signal is analyzed for a vibrational mode in full nonequilibrium, revealing a complex interplay of different transport processes and deviations from the commonly used G0/2 rule of thumb. In addition, the HQME approach is used to benchmark approximate master equation and nonequilibrium Green's function methods.


FAU Authors / FAU Editors

Erpenbeck, André
Thoss, Michael Prof. Dr.
Professur für Theoretische Physik mit dem Schwerpunkt Elektronentransport in Molekülen
Professur für Theoretische Physik mit dem Schwerpunkt Elektronentransport in Molekülen
Schinabeck, Christian
Professur für Theoretische Physik mit dem Schwerpunkt Elektronentransport in Molekülen


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


External institutions with authors

Georg-August-Universität Göttingen


Research Fields

B Nanoelectronic Materials
Exzellenz-Cluster Engineering of Advanced Materials


How to cite

APA:
Schinabeck, C., Erpenbeck, A., Haertle, R., & Thoss, M. (2016). Hierarchical quantum master equation approach to electronic-vibrational coupling in nonequilibrium transport through nanosystems. Physical Review B, 94(20). https://dx.doi.org/10.1103/PhysRevB.94.201407

MLA:
Schinabeck, Christian, et al. "Hierarchical quantum master equation approach to electronic-vibrational coupling in nonequilibrium transport through nanosystems." Physical Review B 94.20 (2016).

BibTeX: 

Last updated on 2019-21-03 at 10:38