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تسجيل مستخدم جديدReminiscence of a magnetization plateau in a magnetization processes of toy-model triangular and tetrahedral clusters
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V.N.Glazkov
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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 $ Jlesssim TlesssimTheta$ (here $J$ is the exchange coupling constant and $Theta$ 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.
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