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Title: Disorder and spectral line shapes in two-level systems
Authors: Shi, Wu-Jun
Chernyak, Vladimir
Zhao, Yang
Shenai, Prathamesh M.
Keywords: DRNTU::Engineering::Materials
Issue Date: 2013
Source: Shenai, P. M., Shi, W.-J., Chernyak, V., & Zhao, Y. (2013). Disorder and spectral line shapes in two-level systems. Chemical Physics Letters, 582, 66-70.
Series/Report no.: Chemical physics letters
Abstract: Using a stochastic model, we examine disorder-induced changes in the absorption line shape of a chromophore embedded in a matrix of noninteracting two-level systems (TLSs) with randomly oriented dipole moments. By systematically controlling the degree of TLS positional disorder, a perfectly crystalline, glassy or a combination of the two environments is obtained. The chromophore is assumed to interact with TLSs via long-range dipole–dipole coupling. At long times and in the absence of disorder, Gaussian line shapes are found, which morph into Lorentzian for a completely disordered environment owing to strong coupling between the chromophore and a TLS in close vicinity.
ISSN: 0009-2614
DOI: 10.1016/j.cplett.2013.07.032
Schools: School of Materials Science & Engineering 
Rights: © 2013 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Chemical Physics Letters, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI:].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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