Route to high-Tc superconductivity via CH4-intercalated H3S hydride perovskites
Wenwen Cui, Tiange Bi, Jingming Shi, Yinwei Li, Hanyu Liu, Eva Zurek, Russell J. Hemley
DOI 10.1103/PhysRevB.101.134504 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
While exploring potential superconductors in the C-S-H ternary system using first-principles crystal structure prediction methods, we uncovered a class of hydride perovskites based on the intercalation of methane into an H3S framework. These intriguing H3S−CH4 structures emerge as metastable at ∼100 GPa. Electron-phonon coupling calculations indicate that phases with CSH7 stoichiometry are potential superconductors with Tc values ranging from 100 K to 190 K at megabar pressures. The results are expected to guide the experimental search for new high-Tc superconductors, including those stable at lower pressures than previously documented superconducting hydrides such as H3S and LaH10.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CSH7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 108 | 100 GPa | unknown |
| CSH7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 194 | 150 GPa | unknown |
| CSH7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 158 | 200 GPa | unknown |
| CSH7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 170 | 150 GPa | unknown |
| CSH7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 138 | 200 GPa | unknown |
| H3S Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 203 | 155 GPa | unknown |
| LaH10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 260 | Pressure not reported | unknown |
Similar papers
Computational discovery of a dynamically stable cubic SH3-like high-temperature superconductor at 100 GPa via CH4 intercalation
similarity 0.95Ying Sun et al.
Source status unknown — claims are unverified
Emergence of near room-temperature superconductivity in hydrides with H2 molecular units
similarity 0.95Zhao Liu et al.
Source status unknown — claims are unverified
Metastability and high-Tc superconductivity in A15-type ternary hydride YSbH6 at moderate pressure
similarity 0.95Maélie Caussé et al.
Source status unknown — claims are unverified
Superconductivity of H3S doped with light elements
similarity 0.95Hongyi Guan et al.
Source status unknown — claims are unverified
High-temperature superconductivity in the Ca-Sc-H system
similarity 0.95D. A. Papaconstantopoulos et al.
Source status unknown — claims are unverified
Absence of conventional room-temperature superconductivity at high pressure in carbon-doped H3S
similarity 0.95Tianchun Wang et al.
Source status unknown — claims are unverified