extra peak in DOS plot

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fan27713
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extra peak in DOS plot

#1 Post by fan27713 » Mon Feb 11, 2013 5:50 pm

Hi, after adding the following keywords in INCAR file while keep everything else (POTCAR, POSCAR, KPOINTS) the same,

NSW = 50
IBRION = 2
ISIF = 4

the same DOS plot of the same system shows an extra spike/peak at -30 eV. There was no such peak before I add these lines. What could cause this to happen? Is it because the ion optimized outside of cell now? Please help.

Thanks in advance
Last edited by fan27713 on Mon Feb 11, 2013 5:50 pm, edited 1 time in total.

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extra peak in DOS plot

#2 Post by admin » Tue Feb 12, 2013 3:19 pm

When you have the same set of atoms you must have the same DOS. Perhaps you changed the interval of energies in DOS-evaluating procedure? Have a look at the character of the peak at -30 eV (using pDOS).
Last edited by admin on Tue Feb 12, 2013 3:19 pm, edited 1 time in total.

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