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Instituto de Ciencia de Materiales de Madrid |
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| Condensed Matter Theory | |||||
| Sigmund Kohler | home | cv | research | publications | ||||
Rectification of laser-induced electronic transport through moleculesJörg Lehmann, Sigmund Kohler, Peter Hänggi, and Abraham NitzanJ. Chem. Phys. 118, 3283 (2003) 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. arXiv:cond-mat/0208404 |
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last modified: 18.11.2024 by
Sigmund Kohler