Laser-assisted conductance of molecular wires: Two-photon contributions

I. Urdaneta, A. Keller, O. Atabek, Vladimiro Mujica

Research output: Contribution to journalArticle

10 Citations (Scopus)

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 languageEnglish
Pages (from-to)460-466
Number of pages7
JournalInternational Journal of Quantum Chemistry
Volume99
Issue number4
DOIs
Publication statusPublished - Jun 23 2004

Fingerprint

Photons
Two photon processes
wire
Wire
Electrodes
electrodes
Lasers
photons
lasers
Molecules
molecules

Keywords

  • Floquet scattering
  • Laser-assisted conductance
  • Molecular wires
  • Multiphoton processes
  • Resonant tunneling

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Laser-assisted conductance of molecular wires : Two-photon contributions. / Urdaneta, I.; Keller, A.; Atabek, O.; Mujica, Vladimiro.

In: International Journal of Quantum Chemistry, Vol. 99, No. 4, 23.06.2004, p. 460-466.

Research output: Contribution to journalArticle

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AU - Mujica, Vladimiro

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N2 - 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.

AB - 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.

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KW - Multiphoton processes

KW - Resonant tunneling

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