Weak Antiferromagnetic Order in Anisotropic Quantum Pyrochlores

Valeri N. Kotov

Weak Antiferromagnetic Order in Anisotropic Quantum Pyrochlores

Strongly Correlated Electrons 2008-10-08 v1

Authors: Valeri N. Kotov

Abstract

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."

Keywords

magnetic phase transitions frustrated magnetism magnetic anisotropy

Cite

@article{arxiv.0810.1051,
  title  = {Weak Antiferromagnetic Order in Anisotropic Quantum Pyrochlores},
  author = {Valeri N. Kotov},
  journal= {arXiv preprint arXiv:0810.1051},
  year   = {2008}
}

Comments

6 pages, 4 figures

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