Table 1 Kxphenenthrene samples.
From: Superconductivity at 5 K in alkali-metal-doped phenanthrene
No. | Nominal composition | Annealing temperature (°C) | Annealing time (h) | Onset SC transition | Shielding fraction |
|---|---|---|---|---|---|
Sample A | K3ph | 200 | 20 | 4.95 K | 5.3% |
Sample B | K3ph | 200 | 20 | 4.8 K | 2.4% |
Sample C | K3ph | 200 | 20 | 4.9 K | 3.7% |
Sample D | K2.5ph | 200 | 20 | No SC | — |
Sample E | K2.8ph | 200 | 20 | No SC | — |
Sample F | K2.9ph | 200 | 20 | No SC | — |
Sample G | K3.1ph | 200 | 20 | No SC | — |
Sample H | K3.2ph | 200 | 20 | No SC | — |
Sample I | K3.5ph | 200 | 20 | No SC | — |
