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arXiv · 0906.5577

Nonequilibrium electron transport in strongly correlated molecular junctions

J. E. Han
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Abstract

We investigate models of molecular junctions which constitute minimal Hamiltonians to account for zero-bias-anomaly and the satellite features of inelastic transport by molecular phonons. Through nonlinear transport calculations with the imaginary-time nonequilibrium formalism, a HOMO-LUMO model with Anderson-Holstein interaction is shown to produce co-tunneling conductance peak in the vicinity of Kondo resonance which is mediated by a re-emergent many-body resonance assisted by phonon excitations at bias equal to the phonon frequency. Destruction of the resonance leads to negative-differential-resistance in the sequential tunneling regime.

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J. E. Han. 2009-06-30. Nonequilibrium electron transport in strongly correlated molecular junctions. https://doi.org/10.1103/physrevb.81.113106

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