Nota de FísicaPublicado
3-D Quantum Heisenberg Ferromagnet with Random Anisotropy
R.M. Zorzenon dos Santos; A. M. Mariz; R.R. dos Santos; C. Tsallis
1985
Datos de la publicación
- Autores
- R.M. Zorzenon dos Santos; A. M. Mariz; R.R. dos Santos; C. Tsallis
- Tipo
- Nota de Física
- Estado
- Publicado
- Fecha de publicación
- 1985
- Descripción
- We study the critical properties of the 3-D quantum Heisenberg ferromagnet with random anisotropies; that is, the coupling between any pair of nearest-neighbouring spins can be either isotropic (Heisenberg) or anisotropic (Ising-or XY-like) at random. Within a Migdal- Kadanoff approximation we obtain the full critical frontier and correlation length critical exponents. We found that the isotropic Heisenberg model is unstable (in the context of universality classes) in the presence of a small concentration of couplings with lower symmetry.
- Año
- 1985
- Número
- CBPF-NF-003/85
- Vínculo con tesis
- No
- Vínculo con beca
- No