Fig. 5: Superconducting properties of Cm CS₃H₁₃.

Phonon band structure, phonon density of states (PHDOS), Eliashberg spectral function in the form of \(\frac{2{\alpha }^{2}F(\omega )}{\omega }\), and the electron phonon integral, λ(ω), for Cm CS₃H₁₃ at 270 GPa. Red circles indicate the electron-phonon coupling constant, λ_qν, at mode ν and wavevector q, and their radii are proportional to the strength. H1 are the hydrogen atoms in the S-H lattice, and H2 are the hydrogen atoms in CH₄. The percentages given were calculated via \(\left(\int\nolimits_{{\omega }_{1}}^{{\omega }_{2}}\lambda (\omega )d\omega /\lambda \right)\times 100 \%\); and the frequency regions spanning ω₁ and ω₂ are color coded in the PHDOS.