Tc max
100.0 K
Tc ambient
—
arXiv year
2020
Papers
10
Tc exp.
100.0 K
Tc theo.
136.0 K
Evidence
mixed
Tc max measured at P=130 GPa, resistivity, arXiv:2101.01315, confirmed by 3 papers
Evidence (15 records from 10 papers)
the flat columns above are aggregates — each line here is one paper's claim| Tc (K) | P (GPa) | Sample | Method | Pairing | Year | Tier | Paper |
|---|---|---|---|---|---|---|---|
| 136.0 | 100.0 | — | — | — | 2021 | T1 | 2101.03481 |
| 136.0 | 100.0 | — | — | — | 2021 | T1 | DOI: 10.1103/PhysRevB.104.L020504 |
| 130.0 | 200.0 | — | — | — | 2022 | T1 | DOI: 10.1103/PhysRevResearch.4.013248 |
| 100.0 | 100.0 | — | resistivity | — | 2024 | — | 2401.12682 |
| 100.0 | 130.0 | — | resistivity | — | 2021 | T1 | 2101.01315 |
| 100.0 | 130.0 | polycrystal | resistivity | — | 2021 | T1 | DOI: 10.1103/PhysRevLett.127.117001 |
| 96.0 | 200.0 | — | — | — | 2025 | T1 | 2507.12506 |
| 86.8 | 250.0 | — | — | — | 2020 | T1 | DOI: 10.1103/PhysRevB.102.144524 |
| 74.0 | 100.0 | — | — | — | 2021 | T1 | 2101.03481 |
| 74.0 | 100.0 | — | — | — | 2021 | T1 | DOI: 10.1103/PhysRevB.104.L020504 |
| 57.0 | 88.0 | — | resistivity | — | 2021 | T1 | 2101.01315 |
| 57.0 | 88.0 | polycrystal | resistivity | — | 2021 | T1 | DOI: 10.1103/PhysRevLett.127.117001 |
| 47.0 | 200.0 | — | — | — | 2025 | T1 | 2507.12506 |
| — | — | — | resistivity, susceptibility | — | 2023 | T1 | 2306.03122 |
| — | — | — | resistivity | — | 2021 | T1 | 2102.00946 |
Hydride Tc parameters (61)
independent NER enrichment for pressure, λ, μ*, and ω_log| Formula | Tc (K) | P (GPa) | λ | μ* | ω_log (K) | Method | Year | Paper |
|---|---|---|---|---|---|---|---|---|
| CeH9 | 198.6 | ambient | — | — | — | lowest-order constrained variational method | 2024 | 2412.09384 |
| CeH9 | 57.0 | 88.0 | — | — | — | resistivity | 2025 | 2510.25971 |
| CeH9 | 57.0 | 88.0 | — | — | — | cited | 2022 | 2208.05191 |
| CeH9 | 57.0 | 88.0 | — | — | — | resistivity | 2021 | DOI: 10.1103/PhysRevLett.127.117001 |
| CeH9 | 57.0 | 88.0 | — | — | — | resistivity | 2021 | 2101.01315 |
| CeH9 | 57.0 | 88.0 | — | — | — | cited | 2021 | DOI: 10.1103/PhysRevB.104.174509 |
| CeH9 | 49.0 | 88.0 | — | — | — | cited | 2022 | 2202.04254 |
| CeH9 | 111.0 | 90.0 | — | — | — | DFT | 2022 | 2204.05708 |
| CeH9 | 136.0 | 100.0 | 1.21 | — | — | Eliashberg | 2021 | 2101.03481 |
| CeH9 | 115.0 | 100.0 | — | — | — | resistivity | 2022 | 2207.01541 |
| CeH9 | 100.0 | 100.0 | — | — | — | resistivity | 2024 | 2401.12682 |
| CeH9 | 84.0 | 100.0 | 1.04 | 0.10 | — | Eliashberg | 2021 | 2101.03481 |
| CeH9 | 84.0 | 100.0 | 1.04 | 0.10 | — | Eliashberg | 2021 | DOI: 10.1103/PhysRevB.104.L020504 |
| CeH9 | 74.0 | 100.0 | 1.04 | 0.13 | — | Eliashberg | 2021 | 2101.03481 |
| CeH9 | 74.0 | 100.0 | 1.04 | 0.13 | — | Eliashberg | 2021 | DOI: 10.1103/PhysRevB.104.L020504 |
| CeH9 | 73.0 | 100.0 | 0.82 | 0.10 | — | DFT | 2021 | DOI: 10.1103/PhysRevLett.127.117001 |
| CeH9 | 63.0 | 100.0 | — | — | — | cited | 2022 | 2202.04254 |
| CeH9 | 57.0 | 100.0 | — | — | — | DFT | 2023 | DOI: 10.1103/PhysRevB.107.L180501 |
| CeH9 | 57.0 | 100.0 | — | — | — | DFT | 2023 | 2301.12320 |
| CeH9 | 45.0 | 100.0 | 0.50 | 0.12 | — | Eliashberg | 2021 | 2111.03697 |
| CeH9 | 110.0 | 110.0 | — | — | — | resistivity | 2025 | 2507.12506 |
| CeH9 | 95.0 | 110.0 | — | — | — | resistivity | 2025 | 2507.12506 |
| CeH9 | 90.0 | 116.0 | — | — | — | resistivity | 2025 | 2507.12506 |
| CeH9 | 82.0 | 120.0 | 1.46 | 0.10 | — | DFT | 2021 | DOI: 10.1103/PhysRevLett.127.117001 |
| CeH9 | 100.0 | 130.0 | — | — | — | cited | 2024 | DOI: 10.1103/PhysRevB.110.184113 |
| CeH9 | 100.0 | 130.0 | — | — | — | resistivity | 2023 | DOI: 10.1103/PhysRevMaterials.7.L101801 |
| CeH9 | 100.0 | 130.0 | — | — | — | cited | 2023 | DOI: 10.1103/PhysRevMaterials.7.L101801 |
| CeH9 | 100.0 | 130.0 | — | — | — | resistivity | 2021 | DOI: 10.1103/PhysRevLett.127.117001 |
| CeH9 | 100.0 | 130.0 | — | — | — | resistivity | 2021 | 2102.12077 |
| CeH9 | 100.0 | 130.0 | — | — | — | resistivity | 2021 | 2101.01315 |
| CeH9 | 91.0 | 137.0 | — | — | — | resistivity | 2023 | 2306.03122 |
| CeH9 | 90.0 | 137.0 | — | — | — | resistivity | 2023 | 2306.03122 |
| CeH9 | 101.0 | 139.0 | — | — | — | cited | 2022 | 2202.04254 |
| CeH9 | 130.0 | 150.0 | — | — | — | resistivity | 2022 | DOI: 10.1103/PhysRevResearch.4.013248 |
| CeH9 | 130.0 | 150.0 | — | — | — | resistivity | 2021 | 2107.12316 |
| CeH9 | 95.0 | 150.0 | — | — | — | resistivity | 2025 | 2507.12506 |
| CeH9 | 100.0 | 166.0 | — | — | — | susceptibility | 2024 | 2405.18544 |
| CeH9 | 100.0 | 166.0 | — | — | — | resistivity | 2024 | 2405.18544 |
| CeH9 | 130.0 | 200.0 | — | — | — | DFT+DMFT+CSC | 2022 | DOI: 10.1103/PhysRevResearch.4.013248 |
| CeH9 | 130.0 | 200.0 | — | — | — | resistivity | 2021 | 2107.12316 |
| CeH9 | 117.0 | 200.0 | — | — | — | cited | 2021 | DOI: 10.1103/PhysRevB.104.214511 |
| CeH9 | 111.0 | 200.0 | 2.30 | 0.12 | 740 | McMillan | 2025 | 2510.25971 |
| CeH9 | 111.0 | 200.0 | — | — | — | resistivity | 2025 | 2503.07042 |
| CeH9 | 111.0 | 200.0 | — | — | — | cited | 2025 | DOI: 10.1103/PhysRevB.111.014510 |
| CeH9 | 111.0 | 200.0 | — | — | — | cited | 2025 | 2503.07042 |
| CeH9 | 111.0 | 200.0 | 2.30 | 0.13 | — | Allen-Dynes | 2021 | 2111.03697 |
| CeH9 | 96.0 | 200.0 | 0.97 | 0.13 | 1230 | anisotropic Eliashberg | 2025 | 2507.12506 |
| CeH9 | 87.0 | 200.0 | 0.95 | 0.13 | 1079 | anisotropic Eliashberg | 2025 | 2507.12506 |
| CeH9 | 86.0 | 200.0 | 0.97 | 0.13 | 1230 | isotropic Eliashberg | 2025 | 2507.12506 |
| CeH9 | 77.0 | 200.0 | 0.95 | 0.13 | 1079 | isotropic Eliashberg | 2025 | 2507.12506 |
| CeH9 | 69.0 | 200.0 | 0.97 | 0.13 | 1230 | Allen-Dynes | 2025 | 2507.12506 |
| CeH9 | 59.0 | 200.0 | 0.95 | 0.13 | 1079 | Allen-Dynes | 2025 | 2507.12506 |
| CeH9 | 53.0 | 200.0 | 0.71 | 0.13 | 1253 | anisotropic Eliashberg | 2025 | 2507.12506 |
| CeH9 | 47.0 | 200.0 | 0.70 | 0.13 | 1114 | anisotropic Eliashberg | 2025 | 2507.12506 |
| CeH9 | 43.0 | 200.0 | 0.71 | 0.13 | 1253 | isotropic Eliashberg | 2025 | 2507.12506 |
| CeH9 | 37.0 | 200.0 | 0.70 | 0.13 | 1114 | isotropic Eliashberg | 2025 | 2507.12506 |
| CeH9 | 35.0 | 200.0 | 0.71 | 0.13 | 1253 | Allen-Dynes | 2025 | 2507.12506 |
| CeH9 | 30.0 | 200.0 | 0.70 | 0.13 | 1114 | Allen-Dynes | 2025 | 2507.12506 |
| CeH9 | 86.8 | 250.0 | 0.97 | 0.10 | 1307 | DFT | 2020 | DOI: 10.1103/PhysRevB.102.144524 |
| CeH9 | 80.5 | 250.0 | 0.97 | 0.12 | — | Allen-Dynes | 2021 | 2111.03697 |
| CeH9 | 74.1 | 250.0 | 0.97 | 0.13 | 1307 | DFT | 2020 | DOI: 10.1103/PhysRevB.102.144524 |
Structure
- Crystal structure
- P63/mmc
- Space group
- P63/mmc (#194)
- Lattice a (Å)
- 3.698
- Lattice c (Å)
- 5.596
Superconducting parameters
- λ_eph (e–ph coupling)
- 1.21
- ω_log
- 1307 K
Samples & pressure
- Doping type
- hole
- Doping level
- 1.000