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Ground state behaviors of four‐sublattice ferromagnetic–antiferromagnetic double layers
Author(s) -
Jiang Wei,
Guo AnBang,
Wei GuoZhu
Publication year - 2007
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.200642567
Subject(s) - antiferromagnetism , condensed matter physics , ferromagnetism , ground state , coupling (piping) , spin (aerodynamics) , quantum , physics , spectral line , chemistry , materials science , quantum mechanics , thermodynamics , metallurgy
Within the framework of the spin‐wave theory and retarded Green's functions method, the magnetic properties of four‐sublattice ferromagnetic and antiferromagnetic double layers at zero temperature have been investigated. Both ferromagnetic and antiferromagnetic interlayer couplings are considered. The spin‐wave spectra, sublattice magnetizations and internal energy of the system in the ground state are studied. The numerical results are calculated for different sets of intra‐ and interlayer coupling interactions. All the exchange couplings are involved in the quantum competition of the system, but the effects of antiferromagnetic exchange couplings play an important role in the balance of the quantum competition. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)