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Hello,

I have got the PARCHG file using all the required key words in the INCAR.
I know that PARCHG file has the local band decomposed charge density info below (for -ve EINT) and above (for +ve EINT) the fermi level.

I was able to plot the STM images using P4VASP both at constant current and constant height. I see different images at constant current and constant height plots.

I know what they mean in an STM experiment.

But in P4VASP can someone explain the technical/scientific details of how/why the STM images change with constant current and height since we are using the same PARCHG file for plotting both.

Thank you in advance

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