Digitale Medien
Springer
Journal of low temperature physics
28 (1977), S. 551-570
ISSN:
1573-7357
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract Measurements of the γ-ray anisotropy of recoil-implanted52Mn ions in pure Au down to 3 mK indicate marked deviations from free-ion behavior in low applied fields. The effective hyperfine field that explains the anisotropy is found to decrease below 10 mK. Although this behavior could be a signature of a “bound” Kondon state with a lower effective hyperfine coupling constant, it is better explained as arising from a combination of Kondo and relaxation effects. The data indicate that the Mn local moment relaxation timeT 1 is comparable to or larger than the Larmor precession time of the Mn nuclei at 3 mK. Other possible reasons for an attenuated γ-ray anisotropy, such as nuclear quadrupole and second-order crystal field effects, are also considered.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00661449
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