Site dilution of quantum spins in the honeycomb and square lattices

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

Eduardo V Castro (Autor) Outra; Peres, NMR (Autor) Outra

Revista

Título: Physica B: Condensed Matter

Vol. 378-80

Páginas: 137-138

ISSN: 0921-4526

Editora: Elsevier

Indexação

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Outras Informações

ID Authenticus: P-004-M3B

DOI: 10.1016/j.physb.2006.01.135

Abstract (EN): The effect of site dilution on the magnetization and oil the density of states (DOS) of a spin-S antiferromagnetic Heisenberg-model in the honeycomb lattice is studied using linear spin wave theory. For a given value of dilution the linearized Hamiltonian is solved in real space. The DOS is computed using a modified version of the recursion method, usually used for fermionic systems. The finite-size scaling results for the magnetization in the Honeycomb lattice are in qualitative agreement with similar results obtained for the square lattice case. We apply our results to the description of dilution effects on the Neel temperature of MnpZn1-pPS3, a spin 2\5 Heisenberg antiferromagnet in an honeycomb lattice.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 2