Unidirectional Electronic Ring Current Driven by a Few Cycle Circularly Polarized Laser Pulse:  Quantum Model Simulations for Mg−Porphyrin

A circularly polarized ultraviolet (UV) laser pulse may excite a unidirectional valence-type electronic ring current in an oriented molecule, within the pulse duration of a few femtoseconds (e.g., τ = 3.5 fs). The mechanism is demonstrated by quantum model simulation for |X〉 = |1 1A1g〉 → |E+〉 = |4 1...

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Published in:Journal of the American Chemical Society 2006-05, Vol.128 (21), p.7043-7049
Main Authors: Barth, Ingo, Manz, Jörn, Shigeta, Yasuteru, Yagi, Kiyoshi
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Multiphoton ionization and excitation to highly excited states (e.g., rydberg states)
Multiphoton ionization and excitation to highly excited states (eg, Rydberg states)
Photon interactions with molecules
Physics
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cited_by cdi_FETCH-LOGICAL-a447t-a25ee4137d885a5c0de2fa2c8ed76c77feec70281031db1e1504e601e50c50313
cites cdi_FETCH-LOGICAL-a447t-a25ee4137d885a5c0de2fa2c8ed76c77feec70281031db1e1504e601e50c50313
container_end_page 7049
container_issue 21
container_start_page 7043
container_title Journal of the American Chemical Society
container_volume 128
creator Barth, Ingo
Manz, Jörn
Shigeta, Yasuteru
Yagi, Kiyoshi
description A circularly polarized ultraviolet (UV) laser pulse may excite a unidirectional valence-type electronic ring current in an oriented molecule, within the pulse duration of a few femtoseconds (e.g., τ = 3.5 fs). The mechanism is demonstrated by quantum model simulation for |X〉 = |1 1A1g〉 → |E+〉 = |4 1Eu+〉 population transfer in the model system, Mg−porphyrin. The net ring current generated by the laser pulse (I = 84.5 μA) is at least 100 times stronger than any ring current, which could be induced by means of permanent magnetic fields, with present technology.
doi_str_mv 10.1021/ja057197l
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source American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list)
subjects Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Multiphoton ionization and excitation to highly excited states (e.g., rydberg states)
Multiphoton ionization and excitation to highly excited states (eg, Rydberg states)
Photon interactions with molecules
Physics
title Unidirectional Electronic Ring Current Driven by a Few Cycle Circularly Polarized Laser Pulse:  Quantum Model Simulations for Mg−Porphyrin
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