Calculating microscopic permittivity

[DrDu]

It has been quite some years since I last used quantum chemistry software.
Now I would like to use some program which allows the calculation of the microscopic omega and k-dependent dielectric function (tensor) for periodic crystals. Any proposals?

 

[rigetFrog]

If you had asked about permeability, I could've told you how to do that from scratch.

How far down into first principles do you need to go? Are there existing crystal and electronic structure data for your system?

 

[DrDu]

Thank you for your answer!
When you work with a k-dependent dielectric function, magnetic effects are already included.
I don't have a specific data set yet, I would try out first some known compounds like NaCl or quartz.

 

[rigetFrog]

I'm looking at my kittel and Ashcroft / Mermin solid state books. There are some nice analytic solutions, though only at some wavelengths.

 

[DrDu]

I There are some nice analytic solutions, though only at some wavelengths.

Rather approximations than solutions. I am looking for ab initio methods.