Re: [Pw_forum] Need help in spin polarized calculations

2017-07-02 Thread sayan chaudhuri
Dear QE experts, I have another two questions from the reply. May be these are very trivial but as a beginner I am unable to understand these things. 1. *tot_magnetization works with fixed occupation. *So to use tot_magnetization card one have to use none but fixed occupation. But in manual it sa

[Pw_forum] Regarding error during adsorption of bromine in graphene

2017-07-02 Thread nipesh dulal
Dear QE experts i am doing adsorption of bromine in 3*3 graphene sheet. But there comes an error after one scf cycle which is mentioned below, Writing output data file bromine_relax_pb.save NEW-OLD atomic charge density approx. for the potential negative rho (up, down): 1.894E-04 0.

Re: [Pw_forum] Need help in spin polarized calculations

2017-07-02 Thread sayan chaudhuri
Dear Mostafa Youssef, Thanks a lot for the apt explanation. Sayan Chaudhuri On Sun, Jul 2, 2017 at 8:27 PM, Mostafa Youssef wrote: > Dear Sayan, > > > 1- nspin=2 works whether you use LDA or GGA. > > 2- start_magnetization works when you apply smearing (occupation tag). > Using this tag yo

Re: [Pw_forum] Need help in spin polarized calculations

2017-07-02 Thread Mostafa Youssef
Dear Sayan, 1- nspin=2 works whether you use LDA or GGA. 2- start_magnetization works when you apply smearing (occupation tag). Using this tag you give an initial guess and let the code to find the final magnetization associated with some nearby local energy minimum. tot_magnetization works