| Issue |
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1245 - C8-1246 | |
| DOI | https://doi.org/10.1051/jphyscol:19888565 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1245-C8-1246
DOI: 10.1051/jphyscol:19888565
Kirensky Institute of Physics, Krasnoyarsk 660036, U.S.S.R.
J. Phys. Colloques 49 (1988) C8-1245-C8-1246
DOI: 10.1051/jphyscol:19888565
CORRELATION FUNCTIONS OF RANDOM ANISOTROPY AND THE PROBLEM OF FERROMAGNET STATE STABILITY
V. A. Ignatchenko et R. S. IskhakovKirensky Institute of Physics, Krasnoyarsk 660036, U.S.S.R.
Abstract
It is shown that stability of the ground state in spin systems with random anisotropies depends on the type of the correlation function inhomogeneities. The ground state of three-dimensional systems will be stable if the spectral density S (k) of the correlation function is equal to zero when k = 0, i.e., the ensemble of random functions modelling inhomogeneities does not contain realizations that are constant in space.