Dear All,<br><br>i have a question.<br>I performed spin-polarized calculations with PW and then Wannier90 for a system including Fe sites. <br>They are fine and convergence is good.<br>Looking at the bands close to Fermi level there are d states coming from Fe.<br>
So i project the Hlda into Wannier states with d character (i also included more states but things don`t change). <br>In the "file".wout i can grep the spread of Wannier functions (WFs) and this is what i get:<br>
<br> WF centre and spread 1 ( 0.000000, 2.668451, 0.000000 ) 0.87609658<br> WF centre and spread 2 ( 0.000000, 2.668451, 0.000000 ) 1.14524506<br> WF centre and spread 3 ( 0.000000, 2.668451, 0.000000 ) 1.08451112<br>
WF centre and spread 4 ( 0.000000, 2.668451, 0.000000 ) 0.89621460<br> WF centre and spread 5 ( 0.000000, 2.668451, 0.000000 ) 1.07608158<br><br> WF centre and spread 6 ( 5.336902, 0.000000, 0.000000 ) 0.56879195<br>
WF centre and spread 7 ( 5.336902, 0.000000, 0.000000 ) 0.68008849<br> WF centre and spread 8 ( 5.336902, 0.000000, 0.000000 ) 0.68984086<br> WF centre and spread 9 ( 5.336902, 0.000000, 0.000000 ) 0.59443634<br>
WF centre and spread 10 ( 5.336902, 0.000000, 0.000000 ) 0.66826689<br><br>From 1 to 5 there are WFs of minority component while from 6 to 10 there are WFs of majority component.<br>Can i say that minority component is more delocazied (for WFs 2,3,5) respect to other WFs 6-10, 1,4?<br>
There is a physical meaning i can associate to the value of spread to understand if Wannier states are more metallic or insulating?<br>In my head i have majority component "close" to be more insulating and other states "close" to be more metallic.<br>
I`m not sure however about it.<br>Is this true? Is this a correct statement?<br>Can you suggest some references to look at this point?<br><br>I thank you in advance.<br><br>cheers,<br><br>Gianluca Giovannetti<br><br><br>
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