Switching the current through molecular wires

Abstract

The influence of Gaussian laser pulses on the transport through molecular wires is investigated within a tight-binding model for spinless electrons including correlation. Motivated by the phenomenon of coherent destruction of tunneling for monochromatic laser fields, situations are studied in which the maximum amplitude of the electric field fulfills the conditions for the destructive quantum effect. It is shown that, as for monochromatic laser pulses, the average current through the wire can be suppressed. For parameters of the model, which do not show a net current without any optical field, a Gaussian laser pulse can establish a temporary current. In addition, the effect of electron correlation on the current is investigated.

8 pages, 6 figures

References in corpus (5)

• Driven quantum transport on the nanoscale
• Quantum master equation approach to quantum transport through mesoscopic systems
• The influence of ultra-fast laser pulses on electron transfer in molecular wires studied by a non-Markovian density matrix approach
• Laser controlled molecular switches and transistors
• A Liouville equation for systems which exchange particles with reservoirs: transport through a nano-device

Cited by in corpus (10)

• Coherent laser control of the current through molecular junctions
• The Driven Liouville von Neumann Equation in Lindblad Form
• Shot noise in non-adiabatically driven nanoscale conductors
• Coulomb blockade effects in driven electron transport
• Evaluation of Dynamical Properties of Open Quantum Systems Using the Driven Liouville-von Neumann Approach: Methodological Considerations
• Instantaneous coherent destruction of tunneling and fast quantum state preparation for strongly pulsed spin qubits in diamond
• Hierarchical quantum master equation approach to charge transport in molecular junctions with time-dependent molecule-lead coupling strengths
• Photon-assisted electronic and spin transport in a junction containing precessing molecular spin
• Photon-Assisted Tunneling through Molecular Conduction Junctions with Graphene Electrodes
• Coherent control via interplay between driving field and two-body interaction in a double well