Laser controlled molecular switches and transistors

We investigate the possibility of optical current control through single molecules which are weakly coupled to leads. A master equation approach for the transport through a molecule is combined with a Floquet theory for the time-dependent molecule. This yields an efficient numerical approach to the...

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Bibliographic Details
Published in:Chemical physics letters 2003-01, Vol.368 (3), p.282-288
Main Authors: Lehmann, Jörg, Camalet, Sébastien, Kohler, Sigmund, Hänggi, Peter
Format: Article
Language:English
Subjects:
Applied sciences
Atomic and molecular physics
Electronics
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Molecular electronic devices
Molecular electronics, nanoelectronics
Molecular properties and interactions with photons
Optical computers, logic elements, interconnects, switches
neural networks
Optical elements, devices, and systems
Optics
Other topics in molecular properties and interactions with photons
Physics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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Summary:We investigate the possibility of optical current control through single molecules which are weakly coupled to leads. A master equation approach for the transport through a molecule is combined with a Floquet theory for the time-dependent molecule. This yields an efficient numerical approach to the evaluation of the current through time-dependent nano-structures in the presence of a finite external voltage. We propose tunable optical current switching in two- and three-terminal molecular electronic devices driven by properly adjusted laser fields, i.e., a novel class of molecular transistors.
ISSN:0009-2614
1873-4448
DOI:10.1016/S0009-2614(02)01860-2