DECOUPLING OF THE SPIN-WAVE AND THE SPIN-FLIP CONTRIBUTIONS FOR THE ANISOTROPIC HEISENBERG SYSTEMS - A WAY TO INTERPRET THE EXPERIMENTAL-DATA ON THE LA2CUO4-TYPE MAGNETICS

Authors
SERENA PA GARCIA N LEVANYUK AP
Citation
Pa. Serena et al., DECOUPLING OF THE SPIN-WAVE AND THE SPIN-FLIP CONTRIBUTIONS FOR THE ANISOTROPIC HEISENBERG SYSTEMS - A WAY TO INTERPRET THE EXPERIMENTAL-DATA ON THE LA2CUO4-TYPE MAGNETICS, Physical review. B, Condensed matter, 50(2), 1994, pp. 1008-1012
Citations number
17
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
50
Issue
2
Year of publication
1994
Pages
1008 - 1012
Database
ISI
SICI code
0163-1829(1994)50:2<1008:DOTSAT>2.0.ZU;2-Y
Abstract
An approximation is presented to analyze the evolution of magnetizatio n with temperature in Heisenberg systems. This approach is based on th e decoupling of spin-wave and spin-flip thermal contributions, in anal ogy with phonon and point-defect decoupling in crystals. Results for b idimensional and tri-dimensional classical Heisenberg model (with and without anisotropy) as well as quasi-two-dimensional quantum antiferro magnetic systems are discussed, showing, in general, excellent agreeme nt with recent experimental data and Monte Carlo simulations.