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A molecular wire sandwiched between nanotube leads: analytic results for the conductance

Cuniberti, Gianaurelio ; Fagas, Giorgos ; Richter, Klaus

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Analytic results for the conductance of a molecular wire attached to mesoscopic tubule leads are obtained. They permit to study linear transport in presence of low dimensional leads in the whole range of parameters. In particular contact effects can be addressed in detail. By focusing on the specificity of the lead-wire contact, we show that the geometry of this hybrid system supports a mechanism of channel selection, which is a distinctive hallmark of the mesoscopic nature of the electrodes.

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