Nota de FísicaPublicado
Surface Magnetization of the Ising Ferromagnet in Semi-Infinite Cubic Lattice: Renormalization Group Approach
A. M. N. Chame; C. Tsallis
1988
Dados da publicação
- Autores
- A. M. N. Chame; C. Tsallis
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 1988
- Descrição
- Through a recently introduced renormalization group method, we study the behaviour of the spontaneous surface anal bulk magnetizations as functions of the temperature for the Ising ferromagnet in a semi-infinite cubic lattice for various ratios <math>J_S/J_B\,\!</math> <math> (J_S \,\!</math> and <math>J_B\,\!</math> respectively are the surface and bulk coupling constants<math>)\,\!</math>. In particular we study the extraordinary transition where the surface maintains its magnetization as the bulk disorders; we find a ''discontinuity on the first derivative'' of the surface magnetization at the bulk transition temperature. The criticality of the system (universality classes, critical exponents and amplitudes) is discussed as well. Finally, we observe an unexpected slight lack of monotonicity of the surface magnetization as a function of <math>J_S/J_B\,\!</math> for <math>J_S/J_B\,\!</math> << 1.
- Ano
- 1988
- Número
- CBPF-NF-030/88
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não