In NiTe2, adding a Hubbard U of 5 eV to surface Ni atoms shifts the calculated SS2 Dirac crossing down by about 100 meV, matching the ARPES value of -1.42 eV.
2(a), the constant energy map at 0 eV clearly re- veals a three-fold symmetric FS
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Strongly correlated topological surface states in type-II Dirac semimetal NiTe$_{2}$
In NiTe2, adding a Hubbard U of 5 eV to surface Ni atoms shifts the calculated SS2 Dirac crossing down by about 100 meV, matching the ARPES value of -1.42 eV.