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arXiv · 1209.4216

Phase diagram of low-dimensional antiferromagnets with competing order parameters: A Ginzburg-Landau-theory approach

V. N. Glazkov·F. Casola·H. -R. Ott·T. Shiroka
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Abstract

We present a detailed analysis of the phase diagram of antiferromagnets with competing exchange-driven and field-induced order parameters. By using the quasi-1D antiferromagnet BaCu_2Si_2O_7 as a test case, we demonstrate that a model based on a Ginzburg-Landau type of approach provides an adequate description of both the magnetization process and of the phase diagram. The developed model not only accounts correctly for the observed spin-reorientation transitions, but it predicts also their unusual angular dependence.

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V. N. Glazkov, F. Casola, H. -R. Ott, T. Shiroka. 2012-09-19. Phase diagram of low-dimensional antiferromagnets with competing order parameters: A Ginzburg-Landau-theory approach. https://doi.org/10.1103/physrevb.87.054427

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