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Quantum transport through single-molecule junctions with orbital degeneracies

Schultz, Maximilian G.. (2010) Quantum transport through single-molecule junctions with orbital degeneracies. Physical Review B, Vol. 82, H. 15 , 155408.

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Official URL: http://edoc.unibas.ch/dok/A5841329

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Abstract

We consider electronic transport through a weakly coupled single-molecule junction, where the molecule has a degenerate electronic spectrum being linearly coupled to an internal vibrational mode. As for such molecules, a rate-equation description in the weak-coupling limit is not possible, we investigate the interplay of the coherent physics caused by the off-diagonal elements of the reduced density matrix with the molecular vibrations. We identify two distinct molecular models and provide an in-depth discussion of their properties on the Hamiltonian level, their transport characteristics for weak and strong electron-phonon coupling and different parameter regimes. We finally extend our reasoning to the cases, when the orbital degeneracy is slightly broken and the leads have more than one electronic mode.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Bruder)
UniBasel Contributors:Rinck, Maximilian
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Institute of Physics
ISSN:0163-1829
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:14 Sep 2012 07:18
Deposited On:14 Sep 2012 06:47

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