Premium
The Properties of a Threefold Degenerate Orbital Magnetic Impurity in a Feromagnetic Crystal
Author(s) -
Ivanov M. A.,
Mitrobanov V. Ya.,
Falkovskaya L. D.,
Fishman A. Ya.
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.2220740106
Subject(s) - impurity , condensed matter physics , exchange interaction , degenerate energy levels , ground state , energy level splitting , crystal (programming language) , crystal field theory , magnetic impurity , excitation , jahn–teller effect , ion , physics , atomic physics , chemistry , ferromagnetism , quantum mechanics , computer science , programming language
The spectrum of localized excitations of a magnetic matrix with impurity Jahn‐Teller magnetic ions with a triplet orbital ground state in a cubic crystal field is investigated. The two cases are examined of the spin‐orbit interaction of the impurity to be much less or much greater than the exchange interaction between the impurity and the matrix. The orbital exchange interaction is shown to lead to displacement and splitting of the pure spin excitation frequencies and under certain correlations between the exchange parameters it can change the ground state of the system. The specific features of the orbital degeneracy of the impurities can also occur in the electromagnetic wave absorption spectrum and in the temperature dependence of the thermodynamic characteristics of the impure crystal.