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- W1994550414 abstract "We theoretically investigate the radiative dynamics of molecular aggregates with physical dimensions much smaller than an optical wavelength. The fluorescence decay rate of a one-dimensional aggregate consisting of N electronically coupled two-level molecules interacting with acoustic and optical lattice phonons is calculated. The linear dependence (superradiance) of the radiative decay rate on the aggregate size N is shown to be quenched by exciton–phonon coupling. An increase of aggregate size N eventually leads to a convergent, size independent decay rate, which is N* times faster than the monomer decay rate. The coherence size N* is generally a function of the exciton–phonon coupling strength, the phonon bandwidth, and the aggregate temperature. For low frequency phonons, a scaling law is obtained and an empirical relation for the temperature dependence N*∼T−1/3 is derived." @default.
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- W1994550414 date "1991-06-01" @default.
- W1994550414 modified "2023-09-23" @default.
- W1994550414 title "Cooperative radiative dynamics in molecular aggregates" @default.
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- W1994550414 doi "https://doi.org/10.1063/1.460185" @default.
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