Coherent destruction of the current through molecular wires using short laser pulses

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Abstract

TechnischeA molecular wire coupled to two electron reservoirs is investigated within a tight-binding approach including spin and Coulomb interaction. Under the assumption of weak coupling to the electron reservoirs a quantum master equation can be derived for the electron transport through the wire. Motivated by the phenomenon of coherent destruction of tunneling for monochromatic laser fields, the influence of Gaussian laser pulses on the transport through the wires is studied. For situations in which the maximum amplitude of the electric field fulfills the conditions for the destructive quantum effect the average current through the system can be suppressed. Turning on the electron correlation does not destroy the suppression of the current by the laser. © 2006 WILEY-VCH Verlag GmbH & Co. KGaA.

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Kleinekathöfer, U., Li, G. Q., Welack, S., & Schreiber, M. (2006). Coherent destruction of the current through molecular wires using short laser pulses. Physica Status Solidi (B) Basic Research, 243(14), 3775–3781. https://doi.org/10.1002/pssb.200672134

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