Phonon Rabi-assisted tunneling in diatomic molecules

Abstract

We study electronic transport in diatomic molecules connected to metallic contacts in the regime where both electron-electron and electron-phonon interactions are important. We find that the competition between these interactions results in unique resonant conditions for interlevel transitions and polaron formation: the Coulomb repulsion requires additional energy when electrons attempt phonon-assisted interlevel jumps between fully or partially occupied levels. We apply the equations of motion approach to calculate the electronic Green's functions. The density of states and conductance through the system are shown to exhibit interesting Rabi-like splitting of Coulomb blockade peaks and strong temperature dependence under the it interacting resonant conditions.

arXiv commentUpdated version, 5 pages, 4 figures, to be published in Phys. Rev. B on 9/15

References in corpus (9)

• Electron transport through double quantum dots
• Measurement of the conductance of a hydrogen molecule
• Phonon effects in molecular transistors: Quantum and classical treatment
• Inelastic electron tunneling via molecular vibrations in single-molecule transistors
• Tunneling broadening of vibrational sidebands in molecular transistors
• Electronic transport and vibrational modes in the smallest molecular bridge: H2 in Pt nanocontacts
• Polarons with a twist
• Dynamic instabilities in resonant tunneling induced by a magnetic field
• Interpolative method for transport properties of quantum dots in the Kondo regime

Cited by in corpus (2)

• Electron Transport through a Molecular Conductor with Center-of-Mass Motion
• Phonon-assisted tunneling regimes in diatomic molecules