Sum-rule constraints in reflectance extrapolation for Kramers-Kronig analysis
- 1 July 1975
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 46 (7) , 3066-3069
- https://doi.org/10.1063/1.321999
Abstract
A criterion is given by which the quality of an extrapolation may be judged when using Kramers-Kronig analysis of reflectance data to obtain the optical constants. The method is particularly useful is the case of small-band-gap materials where the more usual constraints present difficulties. Sum rules on the calculated optical constants are used as guides in choosing an adjustable parameter in the extrapolation function. An analytical model is used to develop a constraint condition with which the adjustable parameter may be chosen. The method is applied to the KK calculation of the optical constants of Cd3As2.This publication has 9 references indexed in Scilit:
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