Dear Users,<br><br><br>I have been trying to see the band gap dependence on Ueff for strontium ferrite.<br>Therefore, three different Ueff were used in "case.inorb" as below.<br>----------------------------------------------------------------------------------------------------------------<br>
1 11 0 nmod, natorb, ipr<br>PRATT 1.0 BROYD/PRATT, mixing<br> 1 1 2 iatom nlorb, lorb<br> 2 1 2 iatom nlorb, lorb<br> 3 1 2<br>
4 1 2<br> 5 1 2<br> 6 1 2<br> 7 1 2<br> 8 1 2<br> 9 1 2<br> 10 1 2<br> 11 1 2<br> 1 nsic 0..AFM, 1..SIC, 2..HFM<br> 0.28 0.00 U J (Ry) Note: we recommend to use U_eff = U-J and J=0<br>
0.28 0.00 U J<br> 0.28 0.00<br> 0.28 0.00<br> 0.28 0.00<br> 0.28 0.00<br> 0.28 0.00<br> 0.28 0.00<br> 0.28 0.00<br> 0.28 0.00<br> 0.28 0.00<br>----------------------------------------------------------------------------------------------------------------<br>
1 11 0 nmod, natorb, ipr<br>PRATT 1.0 BROYD/PRATT, mixing<br> 1 1 2 iatom nlorb, lorb<br> 2 1 2 iatom nlorb, lorb<br> 3 1 2<br>
4 1 2<br> 5 1 2<br> 6 1 2<br> 7 1 2<br> 8 1 2<br> 9 1 2<br> 10 1 2<br> 11 1 2<br> 1 nsic 0..AFM, 1..SIC, 2..HFM<br> 0.52 0.00 U J (Ry) Note: we recommend to use U_eff = U-J and J=0<br>
0.52 0.00 U J<br> 0.52 0.00<br> 0.52 0.00<br> 0.52 0.00<br> 0.52 0.00<br> 0.52 0.00<br> 0.52 0.00<br> 0.52 0.00<br> 0.52 0.00<br> 0.52 0.00<br>----------------------------------------------------------------------------------------------------------------<br>
1 11 0 nmod, natorb, ipr<br>PRATT 1.0 BROYD/PRATT, mixing<br> 1 1 2 iatom nlorb, lorb<br> 2 1 2 iatom nlorb, lorb<br> 3 1 2<br>
4 1 2<br> 5 1 2<br> 6 1 2<br> 7 1 2<br> 8 1 2<br> 9 1 2<br> 10 1 2<br> 11 1 2<br> 1 nsic 0..AFM, 1..SIC, 2..HFM<br> 0.76 0.00 U J (Ry) Note: we recommend to use U_eff = U-J and J=0<br>
0.76 0.00 U J<br> 0.76 0.00<br> 0.76 0.00<br> 0.76 0.00<br> 0.76 0.00<br> 0.76 0.00<br> 0.76 0.00<br> 0.76 0.00<br> 0.76 0.00<br> 0.76 0.00<br>----------------------------------------------------------------------------------------------------------------<br>
<br>But, I do not see the band gap changes, even though Dr. Novak has done the same thing and reported that the band gap gets larger if larger Ueff is used "PRB 2005".<br>Please give me some idea what I am missing.<br>
<br><br>All my best,<br>Jihoon Park<br>