NMR studies of alkali C60 superconductors |
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| Authors: | V. A. Stenger C. Recchia C. H. Pennington D. R. Buffinger R. P. Ziebarth |
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| Affiliation: | 1. Department of Physics, Ohio State University, 43210, Columbus, Ohio
2. Department of Chemistry, Ohio State University, 43210, Columbus, Ohio
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| Abstract: | The authors report13C,87Rb,39K, and133Cs nuclear magnetic resonance (NMR) measurements of lineshapes, Knight shifts, and spin-lattice relaxation rates in the normal and superconducting states of M3C60, where M3 = Rb3, K3, Rb2K, RbK2, Rb2Cs, and RbCs2. Measurements are used as a guide to a new ammonia solvent synthesis technique. Temperature dependence of the superconducting state electron spin susceptibility is found to follow BCS weak coupling predictions. The issue of the Hebel-Slichter coherence peak is addressed. |
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