Rectification in single molecular dimers with strong polaron effect

Abstract

We study theoretically the transport properties of a molecular two level system with large electron-vibron coupling in the Coulomb blockade regime. We show that when the electron-vibron coupling induces polaron states, the current-voltage characteristic becomes strongly asymmetric because, in one current direction, one of the polaron state blocks the current through the other. This situation occurs when the coupling between the polaron states is smaller than the coupling to the leads. We discuss the relevance of our calculation for experiments on C_140 molecules.

4 pages, 4 figures

References in corpus (4)

• Phonon effects in molecular transistors: Quantum and classical treatment
• The Kondo effect in C${}_{60}$ single-molecule transistors
• Inelastic electron tunneling via molecular vibrations in single-molecule transistors
• Vibrational sidebands and dissipative tunneling in molecular transistors

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• Berry-phase effects in transport through single Jahn-Teller molecules
• Charge-vibration interaction effects in normal-superconductor quantum dots
• Thermal rectification in a double quantum dots system with polaron effect
• Finite frequency current noise in the Holstein model
• Path Integral of the Holstein Model with a ${\varphi }^4$ on site potential
• Interference and shot noise in a degenerate Anderson-Holstein model
• Simulating electron-vibron energy transfer with quantum dots and resonators