Reference : Transient dynamics of a molecular quantum dot with a vibrational degree of freedom
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/20252
Transient dynamics of a molecular quantum dot with a vibrational degree of freedom
English
Riwar, Roman-Pascal [> >]
Schmidt, Thomas mailto [University of Basel > Department of Physics]
2009
Phys. Rev. B
80
125109
Yes
[en] 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.
http://hdl.handle.net/10993/20252
10.1103/PhysRevB.80.125109

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