The giant muon Knight shift in antimony: Evidence for a Kondo impurity

Citation:
Johnston, TMS, Chow KH, Dunsiger S, Duty T, Kiefl RF, Koster E, Macfarlane WA, Morris GD, Sonier J, Williams DLI.  1997.  The giant muon Knight shift in antimony: Evidence for a Kondo impurity. Hyperfine Interactions. 106:71-76.

Keywords:

alloys

Abstract:

A detailed study has been undertaken of the muon Knight shift in high purity antimony single crystals. No periodic variations with magnetic field (de Haas-van Alphen oscillations) are observed. The temperature dependence below 175 K is close to that expected for a Kondo-like impurity with an anisotropic muon-electron hyperfine interaction. At higher temperatures the paramagnetic state becomes unstable and a transition occurs to a second state. The longitudinal relaxation rate rises from an apparently non-zero value at T = 0 to a maximum at 50 K, followed by a slow decline. This leads to a Korringa product which is strongly temperature dependent.

Notes:

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DOI:

10.1023/a:1012665118803