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The Application of Green's Functions to a System of Two Almost Magnetic Impurities
Author(s) -
Middleton R. B.,
Doman B. G. S.
Publication year - 1971
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.2220450225
Subject(s) - antiparallel (mathematics) , impurity , magnetic moment , conductor , condensed matter physics , magnetic impurity , physics , chemistry , mathematics , magnetic field , geometry , quantum mechanics
The method of double time Green's functions is used to show that two almost magnetic impurities in a non‐magnetic conductor could under certain circumstances stimulate one another to become magnetic. Although the theory allows the formation of both parallel and antiparallel moments on the impurities, it predicts that no moments are induced when the separation of the impurities is most favourable for antiparallel alignment, and that either parallel or antiparallel moments may be induced when the separation is most favourable for parallel alignment.