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Quantum diffusion of the positive muon in the superconducting state of Al |
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| Authors: | R. Kadono R. F. Kiefl S. R. Kreitzman Q. Li T. Pfiz T. M. Riseman H. Zhou R. Wäppling S. W. Harris O. Hartmann E. Karlsson R. Hempelmann D. Richter T. O. Niinikoski L. P. Le G. M. Luke B. Sternlieb E. J. Ansaldo |
| Affiliation: | 1. TRIUMF and Department of Physics, V6T 2A3, Vancouver, British Columbia, Canada 2. Department of Physics, University of Uppsala, Uppsala, Sweden 3. Kernforschungsanlage, Institute für Festk?rperforschung, GmbH, Jülich, Germany 4. EP Division, CERN, Geneva, Switzerland 5. Department of Physics, Columbia University, 10025, New York, NY, USA 6. Physics Department, University of Saskatchewan, S7N 0K3, Sakatoon, Saskatchewan, Canada |
| Abstract: | We report low temperature studies of muon diffusion and trapping in Al doped with Li impurities. The trapping rate at Li and the deduced muon diffusion rate increase more rapidly with decreasing temperature in the superconducting state compared with the normal state. The temperature dependence of the quantum diffusion rate in the superconducting state is close to that predicted by the Kondo theory. |
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