Superconductivity and Phase Transitions in Compressed Si to 45 GPa
David Erskine, Peter Y. Yu, K. J. Chang, Marvin L. Cohen
DOI 10.1103/PhysRevLett.57.2741 · Physical Review Letters
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Abstract
A diamond-anvil cell is used to measure the pressure dependence of the superconducting transition temperature Tc in both primitive hexagonal and hexagonal-close-packed Si up to 45 GPa. The experimental results verify the prediction of superconductivity in hcp Si and the measured curve of Tc versus pressure is found to be in good qualitative agreement with theory, in contrast to a recent experiment by Lin et al. who claim complete disagreement with theory.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.5 | 41 GPa | unknown |
| Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.9 | 40 GPa | unknown |
| Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.3 | 37 GPa | unknown |
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