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Localized Magnetization Arising from Spin‐Dependent Impurity Potentials in the Wolff Model
Author(s) -
Liu K. C.,
Lam KaiShue,
George Th. F.
Publication year - 1983
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.2221200228
Subject(s) - condensed matter physics , magnetization , impurity , spin polarization , spin (aerodynamics) , electron , thermal conduction , physics , magnetic impurity , polarization (electrochemistry) , anderson impurity model , quantum mechanics , chemistry , magnetic field , thermodynamics
The Wolff model for localized magnetic moments in dilute alloys is extended to include spin‐dependent impurity potentials. Two virtual levels emerge, corresponding to different spin states of the conduction electrons. As a result of this removal of degeneracy, there always exists a more favorable spin polarization for the spin state with the more attractive impurity potential, even in certain circumstances where the original Wolff model yields no magnetization. The results are obtained graphically for various situations. The physical pictures entailed can also be interpreted in terms of the Anderson model.