next up previous contents index
Next: RWIGS-tag Up: TAGS for the rhfsps Previous: RCUT-tag   Contents   Index

RCORE-tag

$\displaystyle RCORE =$   core radius

Default :  
for TM and RRKJ maximum cutoff radius found in Description section
else must be supplied


Determines the core radius for the pseudopotential generation. At the core radius the logarithmic derivatives of the AE wave functions and the pseudo wave functions are matched. For some schemes (TM and RRKJ) this core radius can be similar to the cutoff radius $ R_{\rm cut}$ supplied in the Description section of the PSCTR file 11.4.11. For these schemes the pseudo wave function is strictly the same as the AE wave function for $ r<R_{\rm cut}$. This is not the case for the BHS, VAN and XNC scheme. Here RCORE must be supplied by the user and should be 1.5 times as large as the maximum cutoff radius $ R_{\rm cut}$.



N.B. Requests for support are to be addressed to: vasp.materialphysik@univie.ac.at