Influence of Correlated Hybridization on the Conductance of Molecular Transistors

Details Influence of Correlated Hybridization on the Conductance of Molecular Transistors Influence of Correlated Hybridization on the Conductance of Molecular Transistors

2006-11-04

arxiv.org/abs/cond-mat/0611106v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures

Scientific paper

10.1103/PhysRevB.76.115401

We study the spin-1/2 single-channel Anderson impurity model with correlated (occupancy dependent) hybridization for molecular transistors using the numerical renormalization-group method. Correlated hybridization can induce nonuniversal deviations in the normalized zero-bias conductance and, for some parameters, modestly enhance the spin polarization of currents in applied magnetic field. Correlated hybridization can also explain a gate-voltage dependence to the Kondo scale similar to what has been observed in recent experiments.

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