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28 March 2024
 
  » arxiv » cond-mat/0606616

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Microwave losses of bulk CaC6
G. Cifariello ; E. Di Gennaro ; G. Lamura ; A. Andreone ; N. Emery ; C. Herold ; J. F. Mareche ; P. Lagrange ;
Date 23 Jun 2006
Subject Superconductivity
AbstractWe report a study of the temperature dependence of the surface resistance RS in the graphite intercalated compound (GIC) CaC6, where superconductivity at 11.5 K was recently discovered. Experiments are carried out using a copper dielectrically loaded cavity operating at 7 GHz in a "hot finger" configuration. Bulk CaC6 samples have been synthesized from highly oriented pyrolytic graphite. Microwave data allows to extract unique information on the quasiparticle density and on the nature of pairing in superconductors. The analysis of RS(T) confirms our recent experimental findings that CaC6 behaves as a weakly-coupled, fully gapped, superconductor.
Source arXiv, cond-mat/0606616
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