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arXiv · 2205.07027

Magnetization Plateau of the Distorted Diamond Spin Chain with Anisotropic Ferromagnetic Interaction

Tôru Sakai·Kiyomi Okamoto·Hiroki Nakano·Rito Furuchi
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Abstract

The $S=1/2$ distorted diamond spin chain with the anisotropic ferromagnetic interaction is investigated using the numerical diagonalization and the level spectroscopy analysis. It is known that the system exhibits a plateau of the magnetization curve at the 1/3 of the saturation. The present study indicates that as the anisotropy is varied the quantum phase transition occurs between two different mechanisms of the 1/3 magnetization plateau. The phase diagram with respect to the anisotropy and the ferromagnetic coupling is also presented.

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Tôru Sakai, Kiyomi Okamoto, Hiroki Nakano, Rito Furuchi. 2022-05-14. Magnetization Plateau of the Distorted Diamond Spin Chain with Anisotropic Ferromagnetic Interaction. https://doi.org/10.1063/9.0000255

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