Classical fluctuations and anisotropy in quasi-one-dimensional antiferromagnets

P. Santini, Z. Domański, J. Dong, and P. Erdös
Phys. Rev. B 54, 6327 – Published 1 September 1996
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Abstract

The magnetization of the easy-plane quasi-one-dimensional antiferromagnets CsMnBr3 and RbMnBr3 in the presence of an external magnetic field can be well interpreted by minimizing the classical magnetic energy. However, this type of calculation cannot reproduce the observed anisotropy of the magnetization at high magnetic fields, which therefore is usually attributed to quantum effects. We show that the anisotropy is already present at the classical level, provided thermal fluctuations are taken into account.

  • Received 25 January 1996

DOI:https://doi.org/10.1103/PhysRevB.54.6327

©1996 American Physical Society

Authors & Affiliations

P. Santini, Z. Domański, J. Dong*, and P. Erdös

  • Institute of Theoretical Physics, University of Lausanne, CH-1015 Lausanne, Switzerland

  • *Permanent address: Department of Physics, University of Nanjing, 210 008 China.

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Issue

Vol. 54, Iss. 9 — 1 September 1996

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