No Hessian Matrix output for VASP IBRION=8 calculation?

Madeline Van Dongen @Madeline-Van-Dongen

14 July 2023 0 4K Report

I have completed several DFPT calculations (IBRION=8) of a metal-organic framework supercell, according to several tutorials, to plot the phonon bandstructure and density of states using phonopy. However, no Hessian Matrix is given in the OUTCAR of vasprun.xml - I cannot find a reason for why it will not output, and am yet to find any troubleshooting.

Does anyone know why this is happening and how to resolve the issue? The input files are provided.

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