Physics NotePublished
Influence of the Interaction Anisotropy on the Appearence of Surface Magnetism
A. M. Mariz; U. M. S. Costa; C. Tsallis
1986
Publication details
- Authors
- A. M. Mariz; U. M. S. Costa; C. Tsallis
- Type
- Physics Note
- Status
- Published
- Publication date
- 1986
- Description
- Within a simple real space renormalization group scheme, we study the phase diagram of the d=3 semi-infinite anisotropic Heisenberg ferromagnet, with surface (bulk) coupling constant <math>J_s\,\!</math> <math>(J_B)\,\!</math> and anisotropy <math>\eta_s\,\!</math> <math>(\eta_B)\,\!</math> . We exhibit in particular the interesting effects of <math>\eta_s\,\!</math> and <math>\eta_B\,\!</math> on the (multicritical) ratio <math>J_s/J_B\,\!</math> above which surface order becomes observable even if bulk order is absent. Enhancement occurs for an Ising-like free surface <math>(\eta_s \simeq 1)\,\!</math> on top of an isotropic-Heisenberg like bulk <math>(\eta_B \simeq 0)</math> .
- Year
- 1986
- Number
- CBPF-NF-022/86
- Linked to a thesis
- No
- Linked to a grant
- No