Isotope effect in superconducting Rb3C60
A. P. Ramirez, A. R. Kortan, M. J. Rosseinsky, S. J. Duclos, A. M. Mujsce, R. C. Haddon, D. W. Murphy, A. V. Makhija, S. M. Zahurak, K. B. Lyons
DOI 10.1103/PhysRevLett.68.1058 · Physical Review Letters
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Abstract
Measurements of the superconducting Tc and Raman spectra in isotopically modified Rb3C60 are reported. A decrease in Tc of 0.65±0.10 K in samples with (75±5)% substitution of C13 for C12 yields an exponent of α=0.37±0.05. This interpreted as evidence for phonon-mediated pairing.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Rb3C60 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 29.4 | Pressure not reported | onset |
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