Table 1.

Calculated superconducting properties of hydrogen-deficient LuH₂ at various pressures

Structure	Pressure	λ	${\omega }_{\log }$	$T_c^{\mathrm{AD}}$	$T_c^{\mathrm{E}}$
LuH1.875	20 kbar	0.333	257.516	0.107	0.190
	100 kbar	0.326	257.997	0.085	0.161
	400 kbar	0.360	243.566	0.220	0.328
LuH1.750	20 kbar	0.277	231.482	0.008	0.035
	100 kbar	0.276	224.351	0.007	0.032
	400 kbar	0.299	211.951	0.023	0.062

λ is the total electron–phonon coupling parameter computed from the Eliashberg function, ${\omega }_{\log }$ is the logarithmic averaged frequency, $T_c^{\mathrm{AD}}$ is the superconducting critical temperature estimated from the semiempirical Allen–Dynes formula⁵⁴, and $T_c^{\mathrm{E}}$ is the superconducting critical temperature estimated from the isotropic Eliashberg equation. A standard value of μ^* = 0.125 is used for the Morel–Anderson Coulomb pseudopotential.