[Wien] How to calculate the reflectivity when calculating optical properties

[Fred Nastos]

On February 16, 2005 12:14 pm, phedra phedra wrote:
> Dear Wien users,
> I want to calculate the reflectivity. According to UG, the absorption
> coefficients are given in the file case.absorp. But it seems like that the
> reflectivity are not given. Although the calculated result gives the file
> case.reflectivity, the value for the columns reflect_xx, reflect_yy and
> reflect_zz in the case.reflectivity are all zero.

I don't see anything in the usersguide about a case.reflectivity.

> So I want to calculate the reflectivity with imaginary and real part of the
> dielectric tensors myself. The imaginary parts can be found in the file
> case.joint. But where can I get the real parts?

In case.epsilon[up|dn].

> Why the labels, i.e Im_eps_xx, Im_eps_yy and Im_eps_zz, in files case.joint
> and case.epsilon are the same, but the corresponding values below the
> labels are not equal to each other for the two different files?

As far as I understand, joint only computes the imaginary part of the spectra.
Joint only deals with integrations analogous to the joint-dos.