Franck-Condon blockade and giant Fano factors in transport through single molecules

Jens Koch; Felix Von Oppen

doi:10.1103/PhysRevLett.94.206804

Franck-Condon blockade and giant Fano factors in transport through single molecules

Jens Koch^*, Felix Von Oppen

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

411 Scopus citations

Abstract

We show that Franck-Condon physics leads to a significant current suppression at low bias voltages (termed Franck-Condon blockade) in transport through single molecules with strong coupling between electronic and vibrational degrees of freedom. Transport in this regime is characterized by remarkably large Fano factors (102-103 for realistic parameters), which arise due to avalanchelike transport of electrons. Avalanches occur in a self-similar manner over a wide range of time scales, leading to power-law dependences of the current noise on frequency and vibrational relaxation rate.

Original language	English (US)
Article number	206804
Journal	Physical review letters
Volume	94
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.94.206804
State	Published - May 27 2005

ASJC Scopus subject areas

Physics and Astronomy(all)

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Franck-Condon blockade and giant Fano factors in transport through single molecules

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