[Wien] about calculating the magnetic moment

[Sun Yiyang]

Dear Stefaan and Torsten,
 
Thanks for your elaboration. 
Since both of you mentioned the orbital moment, I would like to follow up by one more question.
In calculations, such as bulk Fe and Fe surfaces (slabs), can I expect the orbital contribution to the total magnetic moment to be negligible? I guess the orbital moment may be quenched.
 
Yours,
Yiyang
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