Lévy statistics for random single-molecule line shapes in a glass

We demonstrate that the statistical behavior of random line shapes of single tetra-tert-butylterrylene chromophores embedded in an amorphous polyisobutylene matrix at T=2 K is described by Lévy statistics as predicted theoretically by Barkai, Silbey, and Zumofen [Phys. Rev. Lett. 84, 5339 (2000)]. T...

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Bibliographic Details
Published in:Physical review letters 2003-08, Vol.91 (7), p.075502-075502, Article 075502
Main Authors: Barkai, E, Naumov, A V, Vainer, Yu G, Bauer, M, Kador, L
Format: Article
Language:English
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Summary:We demonstrate that the statistical behavior of random line shapes of single tetra-tert-butylterrylene chromophores embedded in an amorphous polyisobutylene matrix at T=2 K is described by Lévy statistics as predicted theoretically by Barkai, Silbey, and Zumofen [Phys. Rev. Lett. 84, 5339 (2000)]. This behavior is a manifestation of the long-range interaction between two-level systems in the glass and the single molecule. A universal amplitude ratio is investigated, which shows that the standard tunneling model assumptions are compatible with the experimental data.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.91.075502