Michael Knap, Enrico Arrigoni, Wolfgang von der Linden
We analyze theoretically correlation effects on the transport properties of a benzene molecular transistor, that are mediated by interactions between the motion of the nuclei and the transmitted charge. We focus on a single phononic mode which allows us to derive an analytic expression for the current. The results provide transparent interpretations of various features of the highly nonlinear current-voltage characteristics, which is experimentally accessible through resonant inelastic electron tunneling spectroscopy. The theoretical approach we present is generally applicable to correlated nano-scale devices and considers exactly electron-electron interactions and the coupling to vibrational degrees of freedom in the device while the tunneling coupling to the leads is treated perturbatively.
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http://arxiv.org/abs/1211.1384
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