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The Effect of Spin–Vibrational Interaction in Magnetic Properties of Exchange Tetraclusters
Author(s) -
Polinger V. Z.,
Chibotaru L. F.,
Bersuker I. B.
Publication year - 1985
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.2221290220
Subject(s) - copper , magnetic moment , condensed matter physics , exchange interaction , cluster (spacecraft) , spin (aerodynamics) , tetrahedron , chemistry , type (biology) , materials science , physics , crystallography , thermodynamics , ferromagnetism , ecology , organic chemistry , biology , computer science , programming language
Abstract The magnetic properties are considered of cubic crystals of tetrahedral copper tetraclusters of the type Cu 4 OX 6 L 4 , in the case when each copper ion is orbitally nondegenerate, under the assumption of strong spin‐vibrational interaction with E‐type cluster distortions. It is shown that within this model for all possible values of the exchange parameters the temperature dependence of the effective magnetic moment of the system is monotonous, and hence the four‐centre (pseudo) Jahn‐Teller effect is concluded to be the most probable reason of the anomalous magnetic properties of the copper tetraclusters.