Coherence peak and superconducting energy gap in Rb3C60 observed by Muon spin relaxation

Spin-exchange scattering of endohedral muonium with thermal electronic excitations has been found to result in muon spin relaxation in the fullerene superconductor Rb3C60. The temperature dependence of this T(1) exp -1 muon spin relaxation exhibits a coherence peak just below T(c), and may be charac...

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Bibliographic Details
Published in:Physical review letters 1993-06, Vol.70 (25), p.3987-3990
Main Authors: KIEFL, R. F, MACFARLANE, W. A, FISCHER, J. E, SMITH, A. B, CHOW, K. H, DUNSIGER, S, DUTY, T. L, JOHNSTON, T. M. S, SCHNEIDER, J. W, SONIER, J, BRARD, L, STRONGIN, R. M
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Physics
Properties of type I and type II superconductors
Superconductivity
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Summary:Spin-exchange scattering of endohedral muonium with thermal electronic excitations has been found to result in muon spin relaxation in the fullerene superconductor Rb3C60. The temperature dependence of this T(1) exp -1 muon spin relaxation exhibits a coherence peak just below T(c), and may be characterized in the framework of the Hebel-Slichter (1959) theory for spin-relaxation in a superconductor. (AIAA)
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.70.3987