The PSEUDO and POTCAR files generated by rhfsps and fourpot3
contain a default energy cutoff, which might be used for the
calculations with VASP. The default cutoff
guarantees reliable calculations, with errors in the eigenvalues
smaller than mRy (i.e.
meV,
for
elements the error is usually much smaller).
This is sufficient
as long as the stress tensor is not important, because
Pulay contributions are usually not negligible for this cutoff.
(increase the cutoff by a factor of 1.5 if Pulay contributions
should be avoided).
The default energy cutoff works only for US-PP constructed
with the RRKJ scheme.
The default cutoff
is proportional to the square of the highest expansion
coefficient used in the RRKJ scheme[18,43].
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