[Wien] optical properties of half métal

Hello sir First thanks for your help with my questions. Monsieus I worked on the Co2MnSi compound (Heusler Holloy) when I made the optical properties for wien 2K 2013 and 2014 (software does not separate me in the real or imaginary part of the dielectric function (the spin up and Spin dn).It gives

[Wien] True half métal and false half métal

Hello sir, I have a questions to ask you 1-I have a Heusler alloy when I calculated the band structure I find that the energetic gap exceeds or touches the conduction band of the fermi levels in (spin dn) direction My question, is this compound is a half metal or metal 2-how I can distinguish a