[Pw_forum] phonon with nspin=2 - not implemented ?

[Konstantin Kudin]

 All,

 I ran the following PW/PH calculation for an insulating system:
PW input:
nspin=2
multiplicity=1
starting_magnetization(1)=0.15
starting_magnetization(2)=-0.15

 Then, the PH code crashed with the message:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
     from phq_readin : error #         1
     The phonon code with constrained magnetization is not yet
available

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

 Compared to other options already in PH, the one with nspin=2 for
insulators seems rather less demanding. Is there any big reason why it
is not implemented? Or, can one use some kind of a workaround here?

 Thanks!
 Kostya


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