Hi cp2k users, <div>I run a PDOS calculation with PBE functional for the Yb:YAG system.</div><div>Unfortunatley the band gap is understimated and it has an approximate value of 4 eV rather than about 6.4 eV.</div><div>This what I see (in black O, in red Y, in green Al and in blu Yb)<img alt="Schermata del 2023-01-14 21-09-07.png" width="534px" height="361px" src="cid:3740027c-f64a-4f49-b80c-b1d44c5bcbce" /></div><div>This is the band gap of YAG of 6.4 eV which I expect also for Yb:YAG.</div><div><img alt="Schermata del 2023-01-14 20-43-54.png" width="534px" height="430px" src="cid:4b24417b-7739-4494-9f99-3d74bfa98788" /><br /></div><div>I think that GGA functionals are at a too much lower theory level for accuratley describe the energy gap and consequently the 4f energies splitting of Yb(III) which finally I want to calculate.</div><div>I would want to try the hybrid functional HSE06, but I don't know which pseudopontentials are correct to use for O, Al, Y, Yb.</div><div>I don't find the HSE06 pseudopotentials for Y, Al, O, Yb.</div><div>I attach my input for PDOS calculation with PBE.</div><div>There are evident mistakes? </div><div>Sorry but this is one of the first times that I perform PDOS calculation in general.</div><div><br /></div><div>Thanks a lot </div><div><br /></div><div>Alberto </div>
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