<div dir="ltr"><div><div><div><div>Dear QE users<br></div>I'm studying the TiO2 anatese
(101) surface. I calculated the band structure, but there were some
extra bands in the gap region. I found out that they are because of free
electrons arising from cutting the bulk. So I tried to passivate the
surface with Hydrogen. After passivation, I have less extra bands, but
some bands are still there. How can I solve this problem? and how can I
eliminate these extra bands?<br></div><span>Attached are my bands before and after passivation.<br><br></span></div>Thanks in advance<br></div>Sadegh<br></div>