[Wien] Spin-polarized state not really spin-polarized

2022-10-30 Thread pboulet
Dear all, I am investigating Pb31TlTe32 in which Tl is the only element that bring an odd number of electrons. I have set up a spin-polarized calculation with init_lapw, but not with an anti-ferromagnetic state. As a starting point, I do not include spin-orbit and I use PBE. NOE=959 in the

Re: [Wien] Spin-polarized state not really spin-polarized

2022-10-30 Thread pboulet
All right, so here are the MMTOT data: Starting point of SCF: 123.85779 Converged: 0.05631 And MMI ones: Starting point: :MMINT: MAGNETIC MOMENT IN INTERSTITIAL = 71.11022 :MMI001: MAGNETIC MOMENT IN SPHERE 1=1.03742 :MMI002: MAGNETIC MOMENT IN SPHERE 2=1.03736 :MMI003:

Re: [Wien] Spin-polarized state not really spin-polarized

2022-10-30 Thread fabien . tran
I don't think that it is worth using the FSM method. The calculation started with non-zero moments (FM state) which at the end disappeared, which is already an indication (at least with PBE). In addition, magnetism in solids is usually expected when there are transition-metal atoms, which is

Re: [Wien] Spin-polarized state not really spin-polarized

2022-10-30 Thread fabien . tran
Dear Pascal, Depending on the system it may be possible to stabilize more than one magnetic state. In such cases, the magnetic state obtained at the end of the calculation typically depends on the initial magnetic state when starting the calculation. What was the initial magnetic state in

Re: [Wien] Spin-polarized state not really spin-polarized

2022-10-30 Thread xavier rocquefelte
Dear Pascal, I think that in such a case you definitely need to include the spin-orbit coupling to insure that the bands will be properly treated near the Fermi energy, for instance. Indeed, in the lift of the degeneracies spin-orbit will be significant and can really play a role in

Re: [Wien] Spin-polarized state not really spin-polarized

2022-10-30 Thread Peter Blaha
a) For sure, just an odd number of electrons does not mean that you have to have spin-polarization. If the "impurity electrons" are localized, magnetism is more likely, because it does not interact with neighbors and may form a "flat magnetic band". But the Tl-p state is certainly not very

Re: [Wien] Spin-polarized state not really spin-polarized

2022-10-30 Thread pboulet
All right, thank you all for your comments and suggestions. In any case, I intended to include SO. I shall try FSM too. Best regards, Pascal PS. I noticed that, if I am right, the ‘Liberman et al. 65’ reference mentioned in the LSTART page of the manual regarding the relativistic quantum