Calculate the relative complex permittivity of gold over all possible optical wavelengths using the Brendel-Bormann method as cited by A.D. Rakic, et. al., App. Opt., vol. 37, no. 22, 1998.
Requires the complex error function matlab file 'cef.m' (included) in order to run, originally coded by A. Weideman, and available for direct download here: http://dip.sun.ac.za/~weideman/research/cef.html
This file must be left in the same directory as the parent fle 'eps_au_BB.m'.
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