The TAUCAR file stores the kinetic-energy density [math]\displaystyle{ \tau }[/math] for a metaGGA calculation. It is written by default for metaGGAs (LTAU), but it can be avoided together with the CHGCAR using LCHARG. The kinetic energy density can also be redirected to vaspwave.h5 using LH5.
The TAUCAR file (together with the CHGCAR file) can be read to restart a calculation (ICHARG).
| Tip: We recommend starting from the density files when repeatedly restarting with small changes in the input parameters, e.g., the k-point mesh (KPOINTS).
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| Mind: Available as of VASP 6.6.
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Related tags and articles
CHGCAR,
LTAU,
ICHARG,
FFT-grid dimensions: ENCUT, NGXF, NGYF, NGZF