Table 1 Superconducting parameters of the \(Fm\overline {3}m\) and \(P\overline {\!4}3m\) phase

From: Vacancy-free cubic superconducting NbN enabled by quantum anharmonicity

 

λ

\({\omega }_{\log }\) (meV)

\({T}_{{{\rm{c}}}}^{{{\rm{cDOS}}}}\) (K)

\({T}_{{{\rm{c}}}}^{{{\rm{vDOS}}}}\) (K)

\(Fm\bar{3}m\)

1.2

25

28

27

\(P\bar{4}3m\)

1.2

19

20

20

  1. Superconducting parameters are computed using ISOME45 with a Fermi surface averaged screened Coulomb interaction μ = 0.21 from GW44. Listed are the electron-phonon coupling constant λ, logarithmic average phonon frequency \({\omega }_{\log }\), and superconducting critical temperatures \({T}_{{{\rm{c}}}}^{{{\rm{cDOS}}}}\) and \({T}_{{{\rm{c}}}}^{{{\rm{vDOS}}}}\), assuming constant and energy-dependent electronic DOS near the Fermi level, respectively.
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