Site dilution of quantum spins in the honeycomb and square lattices

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Eduardo V Castro (Author) Other; Peres, NMR (Author) Other

Journal

Title: Physica B: Condensed Matter

Vol. 378-80

Pages: 137-138

ISSN: 0921-4526

Publisher: Elsevier

Indexing

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Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 2