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μ+ Localization and tunnelling in Sc

  • Session 1. Diffusion/Localization
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Abstract

The angular and magnetic field dependence of the transverseμSR relaxation rate in single crystal Sc shows unambiguously that, at low temperatures, the muon is localized along theĉ-axis joining interstitial tetrahedral sites. The best agreement with the measured results, covering a complete range of high and low field data, is obtained on assuming a muon state with fast tunnelling between two adjacent sites at positionsz/c=±0.09 above and below thea−b plane. Both contributions from the muon-induced electric field gradient and that inherent to the crystal were considered.

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References

  1. F.N. Gygax, A. Amato, I.S. Anderson, J.J. Rush and A. Schenck, Z. Phys. Chem., (1993), in press.

  2. A careful examination indicates a very light drop ofσ at the lowest temperature. This feature is not discussed here but will be treated in a future report.

  3. C.K. Saw, B.J. Beaudry, and C. Stassis, Phys. Rev.B 27 (1983) 7013.

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Authors and Affiliations

  1. Institut für Mittelenergiephysik der ETE Zürich, CH-5232, Villigen PSI, Switzerland

    F. N. Gygax, A. Amato & A. Schenck

  2. Institut Laue Langevin, B.P. 156, F-38042, Grenoble Cédex 9, France

    I. S. Anderson

  3. Materials Science and Engineering Laboratory, National Institute of Standards and Technology, 20899, Gaithersburg, Maryland, USA

    J. J. Rush

  4. Paul Scherrer Institut (PSI), CH-5232, Villigen PSI, Switzerland

    G. Solt

Authors
  1. F. N. Gygax
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  2. A. Amato
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  3. A. Schenck
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  4. I. S. Anderson
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  5. J. J. Rush
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  6. G. Solt
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Gygax, F.N., Amato, A., Schenck, A. et al. μ+ Localization and tunnelling in Sc. Hyperfine Interact 85, 73–78 (1994). https://doi.org/10.1007/BF02069404

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  • DOI: https://doi.org/10.1007/BF02069404

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