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Spin polarization of a magnetic electron gas induced by a van Vleck ion
Author(s) -
Palermo L.,
da Silva X. A.
Publication year - 1979
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.2220920235
Subject(s) - ion , polarization (electrochemistry) , electron , condensed matter physics , fermi gas , electron magnetic dipole moment , spin polarization , magnetic moment , rkky interaction , chemistry , exchange interaction , physics , atomic physics , magnetic field , magnetization , quantum mechanics , ferromagnetism
Abstract The mutual polarization of a magnetic electron gas and a van Vleck ion, interacting via exchange, are theoretically investigated using the double‐time Green function method. A pair of equations describing the dynamics of the electron gas and the ion are conveniently decoupled and an analytic expression for the electron gas polarization is obtained which depends on the square of the exchange parameter. Besides a RKKY‐like term, a new term associated to the process of formation of the magnetic moment of the ion appears.