Vibrationally dependent electron-electron interactions in resonant electron transport through single-molecule junctions

Journal article


Publication Details

Author(s): Erpenbeck A, Haertle R, Bockstedte MG, Thoss M
Journal: Physical Review B
Publisher: American Physical Society
Publication year: 2016
Volume: 93
Journal issue: 11
Pages range: 115421
ISSN: 1098-0121


Abstract

We investigate the role of electronic-vibrational coupling in resonant electron transport through single-molecule junctions, taking into account that the corresponding coupling strengths may depend on the charge and excitation state of the molecular bridge. Within an effective-model Hamiltonian approach for a molecule with multiple electronic states, this requires to extend the commonly used model and include vibrationally dependent electron-electron interaction. We use Born-Markov master equation methods and consider selected models to exemplify the effect of the additional interaction on the transport characteristics of a single-molecule junction. In particular, we show that it has a significant influence on local cooling and heating mechanisms, it may result in negative differential resistance, and it may cause pronounced asymmetries in the conductance map of a single-molecule junction.


FAU Authors / FAU Editors

Bockstedte, Michel Georg PD Dr.
Lehrstuhl für Theoretische Festkörperphysik
Erpenbeck, André
Professur für Theoretische Physik mit dem Schwerpunkt Elektronentransport in Molekülen
Thoss, Michael Prof. Dr.
Professur für Theoretische Physik mit dem Schwerpunkt Elektronentransport in Molekülen


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials
Sonderforschungsbereich 953/2 Synthetische Kohlenstoffallotrope


External institutions with authors

Georg-August-Universität Göttingen


Research Fields

B Nanoelectronic Materials
Exzellenz-Cluster Engineering of Advanced Materials


How to cite

APA:
Erpenbeck, A., Haertle, R., Bockstedte, M.G., & Thoss, M. (2016). Vibrationally dependent electron-electron interactions in resonant electron transport through single-molecule junctions. Physical Review B, 93(11), 115421. https://dx.doi.org/10.1103/PhysRevB.93.115421

MLA:
Erpenbeck, André, et al. "Vibrationally dependent electron-electron interactions in resonant electron transport through single-molecule junctions." Physical Review B 93.11 (2016): 115421.

BibTeX: 

Last updated on 2019-03-06 at 16:23