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arXiv · 1910.02585

Magnetization Plateau of the Distorted Diamond Spin Chain

Yuki Ueno·Tomosuke Zenda·Yuta Tachibana·Kiyomi Okamoto·Tôru Sakai
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Abstract

The frustrated quantum spin system on the distorted diamond chain lattice is investigated using the numerical diagonalization of finite-size clusters and the level spectroscopy analysis. In the previous work this system was revealed to exhibit the 1/3 magnetization plateau due to two different mechanisms depending on the coupling parameters, and the phase diagram at the 1/3 magnetization was obtained. In the present work it is found that the 1/3 magnetization plateau vanishes for sufficiently large $XY$-like coupling anisotropy. The phase diagram based on the level spectroscopy analysis is also presented.

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Yuki Ueno, Tomosuke Zenda, Yuta Tachibana, Kiyomi Okamoto, Tôru Sakai. 2019-10-07. Magnetization Plateau of the Distorted Diamond Spin Chain. https://doi.org/10.7566/jpscp.30.011085

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