Hi,all
    I use the siesta to calculate the spin polarizaiton of a Ti doped system 
without magnetic materials. When no spin-polarized, the total energy is  
-9276.290371 eV; while adding the spin polarizaiton, the total energy is 
-9279.474363 eV, and it shows "Total spin polarization (Qup-Qdown) =    
4.000000" in the output file. My question are :1. Do the calcaluted total 
energy trend is right, adding the spin polarization causing the absolute value 
bigger? 2. Is it possible that Qup-Qdown value is "4"? 3. Which unit is the 
"Total spin polarization"?
Best Wishes!
                                                                                
                               Shi
                                                                                
                           2012.4.6

Responder a