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Effects of Three‐Body Interactions on Hyperfine Fields
Author(s) -
Manohar C.,
Kelkar V. K.
Publication year - 1976
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220730243
Subject(s) - hyperfine structure , polarization (electrochemistry) , physics , condensed matter physics , theoretical physics , atomic physics , chemistry
It is argued that three‐body interactions have to be introduced even to understand qualitatively the systematics of the measurements of hyperfine fields in Heusler and other related alloys. Formulae for spin polarization including three‐body interaction effects are derived and compared with the Ruderman‐Kittel‐Kasuya‐Yosida theory. As a special case we obtain the results of Blandin and Campbell. We conclude that for any meaningful quantitative comparison with experiments one should include both the three‐body effects and the effects discussed by Blandin and Campbell.