Weak Antiferromagnetic Order in Anisotropic Quantum Pyrochlores

Details Weak Antiferromagnetic Order in Anisotropic Quantum Pyrochlores Weak Antiferromagnetic Order in Anisotropic Quantum Pyrochlores

2008-10-07

arxiv.org/abs/0810.1051v1

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 4 figures

Scientific paper

We study the ground state properties of an anisotropic, quasi-2D version of the quantum (S=1/2) pyrochlore antiferromagnet. In the presence of Dzyaloshinsky-Moriya interactions, in addition to the Heisenberg exchanges, it is shown that two types of ordered magnetic states are generally possible: non coplanar "chiral," and coplanar antiferromagnetic order. The magnetic moments in all cases are determined by the Dzyaloshinsky-Moriya interactions and in this sense the antiferromagnetic order is "weak."

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