Table 1 Summary of the obtained superconducting properties for YH₆, CaH₆, H₃S, and D₃S.

	N(ε_F)[N_H(ε_F)]	λ	\({\omega }_{\log }\)	T_c^mMc	T_c^UF	T_c^FSR	T_c^FBW	T_c^FBW+μ	T_c\({}^{\exp }\)
	(eV⁻¹)		(meV)	(K)	(K)	(K)	(K)	(K)	(K)
YH₆	0.69 [0.32]	2.0	108	154	202	250	239	238	208–214
CaH₆	0.31 [0.27]	2.0	104	148	188	205	200	198	~ 204
H₃S	0.53 [0.27]	2.3	108	173	232	256	250	232	172–184
D₃S	0.53 [0.27]	2.2	80	127	166	190	182	170	144–148

The table lists the DOS N(ε_F) and the H partial DOS N_H(ε_F) at the Fermi level, the electron-phonon coupling parameter λ, the logarithmic average of the phonon frequencies \({\omega }_{\log }\), and the superconducting critical temperature T_c according to the modified McMillan formula (mMc), the University of Florida machine-learning model (UF), the Fermi-surface-restricted approximation (FSR), and the full-bandwidth implementation without (FBW) and with (FBW+μ) the self-consistent chemical potential update scheme, and all experimental critical temperatures T_c\({}^{\exp }\) at 200 GPa available in the literature. The T_c\({}^{\exp }\) of Ref. ²¹ and Ref. ²⁶ are used as reference for YH₆ and CaH₆, respectively; and the T_c\({}^{\exp }\) of Refs. ^50,53,59 are used as reference for H₃S and D₃S.

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