Year: 2003
Type: article
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 nonadiabatic regime and beyond linear response.
Source: The Journal of Chemical Physics
DOI: 10.1063/1.1536639
Authors: Jörg Lehmann, Sigmund Kohler, Peter Hänggi, Abraham Nitzan
Institutions: University of Augsburg, Tel Aviv University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2122461193