Coupling strength in superconducting fullerenes
Vladimir Z. Kresin
DOI 10.1103/PhysRevB.46.14883 · Physical Review B
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Abstract
The coupling strength λ and the characteristic phonon frequency 〈Ω2〉1/2 in superconducting fullerenes can be determined based on general expressions for Tc and on the isotope effect and NMR experimental data. An analysis of recent data shows that the superconducting state of doped fullerenes A3C60 is caused by strong electron-vibrational coupling with λ1=2.1 for A=Rb and λ2=1.5 for A=K, and 〈Ω2〉1/2≃250 cm−1.
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. | 28 | Pressure not reported | unknown |
| K3C60 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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