Query regarding COHP Calculation
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Hello,
I am studying a particular Perovskite structure. I performed COHP calculation to understand the bond strength. As per the paper mentioned in the manual (PCCP,17,31023-31029 (2015) -"Integration of the COHP diagram is a measure of bond strength (in units of energy)).
But when I perform the COHP analysis and integrated till Fermi level, I am getting a positive value for the integrated COHP, that means the bond is unstable right ?, which is not possible since it is a very well experimentally observed structure. Attached below are the COHP and integrated COHP plot between oxygen and Ni atom within the considered unit cell.
Any suggestions ? I am attaching the input and COHP files from properties calculation.
Thanks in advance for your help !
Regards,
Rams
