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A terahertz molecular switch

P. A. Orellana·F. Claro
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Abstract

We present time-dependent results describing the current through a molecular device, modeled as a complex with two active centers connected to leads under bias. We show that, at a properly adjusted external voltage, a passing terahertz electromagnetic pulse may cause a transition between states of finite and negligible current, suggesting that the system might be useful as a nanoscopic switch in the terahertz range. A phase diagram defining the bias region in which the transition takes place within a short time is given. As described, the physical processes involved are of an entirely different nature than those in ordinary photodetectors.

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P. A. Orellana, F. Claro. 2003-04-03. A terahertz molecular switch. https://doi.org/10.1103/physrevlett.90.178302

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