The isotope effect in H${}_3$S superconductor

Abstract

The experimental value of ${\mathrm{H}}_3\mathrm{S}$ isotope coefficient decreases from $2.37$ to $0.31$ in the pressure range from $130$ GPa to $200$ GPa. We have shown that the value of $0.31$ is correctly reproduced in the framework of the classical Eliashberg approach. On the other hand, the anomalously large value of the isotope coefficient ($2.37$) may be associated with the strong renormalization of the normal state by the electron density of states.

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• Materials under high pressure: A chemical perspective
• Resonant multigap superconductivity at room temperature near a Lifshitz topological transition in sulfur hydrides
• On the Calculation of the Inverse Isotope Effect in PdH(D): A Migdal-Eliashberg Theory Approach
• Compressed H${}_3$S: inter-sublattice Coulomb coupling in a high-$\text{T}$${}_C$ superconductor
• Crystal Chemistry at High Pressure
• Effect of van Hove singularity on the isotope effect and critical temperature of H${}_3$S hydride superconductor as a function of pressure
• The Isotope Effect and Critical Magnetic Fields of Superconducting YH${}_6$: A Migdal-Eliashberg Theory Approach