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HSE06 setup nullifies initial magnetic moments

Posted: Tue Dec 31, 2024 10:57 pm
by eva_pospisilova

Dear VASP community,

It is known from the literature that monoclinic alpha-phase of solid oxygen forms antiferromagnetic molecular crystal with ferromagnetic O2 molecules.

I have obtained the antiferromagnetic solution by standard PBE relaxation (with the tag LMAXMIX=4) of this structure, attached *.PBE files. The spin-polarized non-collinear setup lowered energy by approx. 100meV/at. compared to the non-spin-polarized one.

I wanted to start HSE06 spin-polarized relaxation from the already relaxed PBE structure from the final PBE-spin state. I was not able to do that with the LMAXMIX=4 tag, however (the job even did not started to run). Hence I was forced to remove this line, files *.HSE06 enclosed, leading to somewhat different structure: monoclinic angle beta 116deg. instead of 120deg. and zero magnetic state with HSE06 (and ferromagnetic PBE-state without LMAXMIX=4 line).

Is there any way to correctly reproduce the antiferromagnetic O2 state with HSE06?

Eva Pospisilova