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Reminiscence of a Magnetization Plateau in a Magnetization Processes of Toy-Model Triangular and Tetrahedral Clusters

  • V. N. GlazkovEmail author
ORDER, DISORDER, AND PHASE TRANSITION IN CONDENSED SYSTEM
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Abstract

We discuss magnetization curves of a toy-model trigonal and tetrahedral clusters. Nonlinearity of magnetization with local minimum of differential susceptibility resembling known magnetization plateaus of triangular-lattice and pyrochlore lattice antiferromagnets is observed at intermediate temperature range JT ≲ Θ (here, J is the exchange coupling constant and Θ is a Curie–Weiss temperature). This behavior is due to increased statistical weight of the states with intermediate total spin of the cluster, which is related to the “order-by-disorder” mechanism of plateau stabilization of a macroscopic frustrated magnet.

Notes

ACKNOWLEDGMENTS

Author thanks Prof. L.E. Svistov (Kapitza Institute) for drawing attention to this problem and Prof. A.I. Smirnov (Kapitza Institute) for providing experimental data for comparison and useful discussions.

The work was supported by Russian Science Foundation Grant no. 17-02-01505, author work at HSE was supported by Program of fundamental studies of Higher School of Economics.

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Copyright information

© Pleiades Publishing, Inc. 2019

Authors and Affiliations

  1. 1.Kapitza Institute for Physical Problems, Russian Academy of SciencesMoscowRussia
  2. 2.International Laboratory for Condensed Matter Physics, National Research University “Higher School of Economics”MoscowRussia

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