Electron transfer in a two-level system within a Cole-Davidson vitreous bath

Mehdi Zarea; Mark A. Ratner; Michael R. Wasielewski

doi:10.1063/1.4860972

Electron transfer in a two-level system within a Cole-Davidson vitreous bath

Mehdi Zarea, Mark A. Ratner, Michael R. Wasielewski

Chemistry

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We study electron transfer (ET) in a two level quantum system coupled to a glassy viscous bath. The bath is modeled by the Cole-Davidson (CD) spectral density. The ET in this model is compared to the ET in a normal Drude-Debye (DD) model. It is shown that at low temperatures and when the coupling to the bath is weak, the viscous bath preserves the quantum coherence for a longer time. However in the strong coupling regime, the tunneling rate is higher in the CD. In the classical high temperature limit the difference between the CD and DD models is negligible.

Original language	English (US)
Article number	024110
Journal	Journal of Chemical Physics
Volume	140
Issue number	2
DOIs	https://doi.org/10.1063/1.4860972
State	Published - Jan 14 2014

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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abstract = "We study electron transfer (ET) in a two level quantum system coupled to a glassy viscous bath. The bath is modeled by the Cole-Davidson (CD) spectral density. The ET in this model is compared to the ET in a normal Drude-Debye (DD) model. It is shown that at low temperatures and when the coupling to the bath is weak, the viscous bath preserves the quantum coherence for a longer time. However in the strong coupling regime, the tunneling rate is higher in the CD. In the classical high temperature limit the difference between the CD and DD models is negligible.",

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AU - Ratner, Mark A.

AU - Wasielewski, Michael R.

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AB - We study electron transfer (ET) in a two level quantum system coupled to a glassy viscous bath. The bath is modeled by the Cole-Davidson (CD) spectral density. The ET in this model is compared to the ET in a normal Drude-Debye (DD) model. It is shown that at low temperatures and when the coupling to the bath is weak, the viscous bath preserves the quantum coherence for a longer time. However in the strong coupling regime, the tunneling rate is higher in the CD. In the classical high temperature limit the difference between the CD and DD models is negligible.

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Electron transfer in a two-level system within a Cole-Davidson vitreous bath

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