[Wien] optic-tetra value

[emami seyyed amir abbas]

Dear users.

I  am trying to obtain optical properties of a half-metal compound. As i  know for metallic systems we should put tetra/with value=101. But in  half-metal systems one spin channel has metallic behavior and other has  insulator or semiconductor behavior. Accordingly, which value will be  appropriated for this input.
 
Thank you in advance for your attention to this matter  
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