Exciton migration in a fluctuating medium II

Itsuko Sato and Fumiaki Shibata

Physica A: Statistical Mechanics and its Applications, 1986, vol. 135, issue 1, 139-166

Abstract: A statistical theory is developed on exciton migration in a stochastic environment. The theory is based on the time-convolution equation formalism with the partial cumulant expansion. For the two-state jump Markoff process, an expansion method from the atomic limit is also presented. The theory is further extended to include itinerant motion of excitons. Our formalism is valid for any time scale and can be used to treat the off-diagonal as well as the diagonal fluctuations. The resulting equations for the self-energy of excitons are solved to give absorption spectra and the density of states.

Date: 1986
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:135:y:1986:i:1:p:139-166

DOI: 10.1016/0378-4371(86)90109-3

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