Exciton migration in a fluctuating medium III

Itsuko Sato and Fumiaki Shibata

Physica A: Statistical Mechanics and its Applications, 1986, vol. 135, issue 2, 388-413

Abstract: A statistical mechanical theory of exciton migration in a stochastic medium is developed when the process is Gaussian. This is done with the use of the partial cumulant method. Certain rigorous results are obtained in a simple case and the results are generalized to take itineracy into account. The diagonal and the off-diagonal fluctuations are treated simultaneously. In a special circumstance, our theory predicts the Urbach tails and the theoretical calculations agree quite well with the simulation data. Effects of the off-diagonal fluctuations are also investigated in detail.

Date: 1986
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:135:y:1986:i:2:p:388-413

DOI: 10.1016/0378-4371(86)90150-0

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