Nuclear Magnetic Resonance of A3C60 Superconductors
V. A. Stenger, C. H. Pennington, D. R. Buffinger, R. P. Ziebarth
DOI 10.1103/PhysRevLett.74.1649 · Physical Review Letters
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Abstract
We report field and temperature dependent multinuclear NMR Knight shift and T1 investigations of A3C60 superconductors (A=alkalimetal). Suppression of the Hebel-Slichter peak in 1T1T is shown to result from large applied magnetic fields. The normal state temperature variation of T1T is shown to be associated with thermal expansion of the lattice, and Stoner enhancement of the density of states is inferred. Knight shift results indicate the weak coupling limit of Bardeen-Cooper-Schrieffer superconductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Rb2CsC60 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 31 | Pressure not reported | onset |
| K3C60 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Rb3C60 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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