Dear Molte

your system could be symmetric under operations made by a rotation + the time reversal operation, in fact these are  the operations that the no_t_rev option disables, not the time reversal per se.

does  the results  with and without t_rev compare correctly ?

best regards Pietro

On 08/04/20 12:57, Malte Sachs wrote:
Dear all,

I am performing non-collinear magnetic calculations with spin-orbit interactions with QE 6.5. As far as I have understand, for a ferromagnetic system time-reversal symmetry should be broken in this case.

Although the program detects the right magnetic double point group, the k-points grid is set up with time-reversal symmetry and I have to set the no_t_rev flag manually to disable this. Is there any reason why this isn't done by default (e.g. these calculations can be done safely with a more reduced k-points grid...)? Do I miss something?

Best regards,

Malte Sachs



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