Abstract
We extend to second order in the field intensity a previously obtained first-order expression for the conductance of a tight-binding molecular wire, bridging two electrodes, illuminated by a weak laser. The higher-order term brings in corrections due to two-photon processes that, for low intensities and strong molecule-electrode contacts, are several orders of magnitude smaller than the first-order leading terms. For other ranges of parameters, the second-order correction may be significant mostly due to processes involving the absorption or emission of two photons.
Original language | English (US) |
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Pages (from-to) | 460-466 |
Number of pages | 7 |
Journal | International Journal of Quantum Chemistry |
Volume | 99 |
Issue number | 4 |
DOIs | |
State | Published - Jun 23 2004 |
Externally published | Yes |
Keywords
- Floquet scattering
- Laser-assisted conductance
- Molecular wires
- Multiphoton processes
- Resonant tunneling
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Physical and Theoretical Chemistry