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Rectification of laser-induced electronic transport through molecules

Jörg Lehmann·Sigmund Kohler·Peter Hänggi·Abraham Nitzan
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Abstract

We study the influence of laser radiation on the electron transport through a molecular wire weakly coupled to two leads. In the absence of a generalized parity symmetry, the molecule rectifies the laser induced current, resulting in directed electron transport without any applied voltage. We consider two generic ways of dynamical symmetry breaking: mixing of different harmonics of the laser field and molecules consisting of asymmetric groups. For the evaluation of the nonlinear current, a numerically efficient formalism is derived which is based upon the Floquet solutions of the driven molecule. This permits a treatment in the non-adiabatic regime and beyond linear response.

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Jörg Lehmann, Sigmund Kohler, Peter Hänggi, Abraham Nitzan. 2002-08-21. Rectification of laser-induced electronic transport through molecules. https://doi.org/10.1063/1.1536639

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