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APS » Journals » Phys. Rev. B » Volume 56 » Issue 21
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Phys. Rev. B 56, 13685–13688 (1997)

Spin-density wave in Ising-coupled antiferromagnetic chains

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J. P. Rodriguez
Instituto de Ciencia de Materiales, Consejo Superior de Investigaciones Científicas, Universidad Autonoma de Madrid, Cantoblanco, 28049 Madrid, Spain
Department of Physics and Astronomy, California State University, Los Angeles, California 90032

P. D. Sacramento
Departamento de Física, Instituto Superior Técnico, 1096 Lisboa Codex, Portugal
Centro de Física das Interacções Fundamentais, Instituto Superior Técnico, 1096 Lisboa Codex, Portugal

V. R. Vieira
Centro de Física das Interacções Fundamentais, Instituto Superior Técnico, 1096 Lisboa Codex, Portugal

Received 31 July 1997; published in the issue dated 1 December 1997

The effect of anisotropy in the nearest-neighbor spin interactions that couple N>~2 consecutive spin-1/2 antiferromagnetic chains is studied theoretically by considering the limit where the coupling is purely of the Ising type. An analysis based on the equivalent Luttinger model reveals that the ground state is an Ising antiferromagnet in general.

© 1997 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.56.13685
DOI:
10.1103/PhysRevB.56.13685
PACS:
75.10.Jm, 75.30.Fv, 75.30.Gw, 74.20.Mn
 
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