Density of states of Frenkel excitons in weakly disordered systems

Details Density of states of Frenkel excitons in weakly disordered systems Density of states of Frenkel excitons in weakly disordered systems

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apr.x4008b&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present the calculation of the density of states of Frenkel excitons in weakly disordered one , two , and three-dimensional systems. A random distribution of transition frequencies with variance s2 characterizes the disorder. The Coherent Potential Approximation (CPA) calculations show that the density of states (DOS) is very sensitive to any variations in the disorder parameter s. Our calculations are in good agreement with previous work based on the Monte Carlo simulation. One of us (AB) acknowldges the support of the University of Wisconsin--Whitewater for this work through a university research grant.

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