96-410 Parreira J. R., Bolina O., Perez J. F.

Neel Order in the Ground State of Spin-1/2 Heisenberg Antiferromagnetic Multilayer Systems (10K, LaTeX) Sep 10, 96

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Abstract. We show the existence of Neel order for the ground state of a system composed by M two-dimensional layers with spin-1/2 and Heisenberg antiferromagnetic coupling, provided M \geq 8. The method uses the infrared bounds for the ground state combined with the ideas introduced by Kennedy, Lieb and Shastry.

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