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Transient dynamics of a molecular quantum dot with a vibrational degree of freedom

Riwar, Roman-Pascal and Schmidt, Thomas L.. (2009) Transient dynamics of a molecular quantum dot with a vibrational degree of freedom. Physical Review B, Vol. 80, H. 12 , 125109, 7 S..

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Official URL: http://edoc.unibas.ch/dok/A5262034

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Abstract

We investigate the transient effects occurring in a molecular quantum dot described by an Anderson-Holstein Hamiltonian, which is instantly coupled to two fermionic leads biased by a finite voltage. In the limit of weak electron-phonon interaction, we use perturbation theory to determine the time dependence of the dot population and the average current. The limit of strong coupling is accessed by means of a self-consistent time-dependent mean-field approximation. These complementary approaches allow us to investigate the dynamics of the inelastic effects occurring when the applied bias voltage exceeds the phonon frequency and the emergence of bistability.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Bruder)
UniBasel Contributors:Schmidt, Thomas L.
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:22 Mar 2012 14:25
Deposited On:22 Mar 2012 13:49

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