[Wien] Calculation about the effect of external magnetic field

[pieper]

Dear Yanli,

you did not answer the crucial question:

what is the size of the field you put in your calculation?

My guess is that it simply is much too small to see any effect in, e.g. 
the DOS. You plot the DOS on energy scales of eV. Compare that to the 
energy of the moment of an electron in the field you chose - I  expect 
something like 1 T - so maybe you calculate 1 mu_B*1 T  ... then decide 
if you should be able to see the shift in energy corresponding to that 
field.

Best regards,

Martin Pieper

---
Dr. Martin Pieper
Karl-Franzens University
Institute of Physics
Universitätsplatz 5
A-8010 Graz
Austria
Tel.: +43-(0)316-380-8564


Am 03.09.2014 09:42, schrieb 李艳丽:
> Dear Dr. Gerhard H. Fecher,
>  Thank you very much for your reply. So for example, if I want to see
> the effect of external magnetic field on the properties(such as the
> Fermi level, DOS and Bandstructures) of Fe3O4(the saturated magnetic
> moment of Fe3O4/unit cell is about 8.0. mu_B ) , I am wondering
> whether I should try "runfsm_lapw -m -7.0(or other non-saturated value
> of magnetic moment) -orb "?
>  Thank you again!
> Best Regards,
> Yanli
> 
> 
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