Dear Users,<br><br> I am new to Wannier.90 programme. I am facing problem to do this.<br> I have some doubt.<br><br>1. When I am comparing my band structure of wien2k and wannier90 , it is not matching. Both the plots are having lots of difference.<br>
I did not get, where I am going wrong.<br>2. At the time of choosing the energy window, according to the UG, we should take the window near to the Fermi level.<br> Below I have attached the case.scf2 file.<br>According to this what should be my energy window ?<br>
In the example file SrVO3, the Fermi energy is nearly 8 eV, and the energy window given is [-1,1] in find_band case.<br>In my present case, Fermi energy is also 8.425609 eV, but I did not find my band structure to same in both the case.<br>
<br><br> <br><br><br>:GMA : POTENTIAL AND CHARGE CUT-OFF 12.00 Ry**.5<br> Bandranges (emin - emax) and occupancy:<br>:BAN00017: 17 -0.371153 -0.369675 2.00000000<br>:BAN00018: 18 -0.076978 0.121219 2.00000000<br>
:BAN00019: 19 0.218896 0.300257 2.00000000<br>:BAN00020: 20 0.396381 0.579395 2.00000000<br>:BAN00021: 21 0.396381 0.583671 2.00000000<br>:BAN00022: 22 0.396381 0.588598 2.00000000<br>:BAN00023: 23 0.535254 0.648862 1.99260378<br>
:BAN00024: 24 0.547112 0.648862 1.98563515<br>:BAN00025: 25 0.560123 0.648862 1.89563440<br>:BAN00026: 26 0.605337 0.724391 0.11502324<br>:BAN00027: 27 0.617237 0.735462 0.01110344<br>:BAN00028: 28 0.669777 0.738635 0.00000000<br>
:BAN00029: 29 0.690653 0.748837 0.00000000<br>:BAN00030: 30 0.695267 0.774964 0.00000000<br>:BAN00031: 31 0.736166 0.780066 0.00000000<br>:BAN00032: 32 0.757906 0.791812 0.00000000<br> Energy to separate low and high energystates: -0.12698<br>
<br><br>:NOE : NUMBER OF ELECTRONS = 50.000<br><br>:FER : F E R M I - ENERGY(TETRAH.M.)= 0.61953<br><br><br>I did understand the concept of the energy window of -1 to 1 eV range in the case of SrVO3.<br><br>
Can any one, explain, where I was wrong and how to get the similar band structure in both wien2k and wannier90 programme.<br><br><br>Thanking You<br><br><br clear="all"><br>-- <br>Swetarekha Ram,<br>Research Scholar,<br><br>