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arXiv · 1706.06947

Quantum Phase Transition in the Twisted Three-Leg Spin Tube

Keisuke Ito·Shun Yokoo·Kiyomi Okamoto·Toru Sakai
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Abstract

We investigate the spin-1/2 twisted three-leg antiferromagnetic quantum spin tube in the presence of the easy-plane anisotropy, using the numerical diagonalization of finite-size clusters. And we observe cases of the existence and the absence of magnetization plateau at 1/3 height of saturation magnetization when the anisotropy is tuned. The phenomenological-renormalization analysis indicates a quantum phase transition between the 1/3 magnetization plateau phase and the plateauless one. The phase diagram is also presented.

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Keisuke Ito, Shun Yokoo, Kiyomi Okamoto, Toru Sakai. 2017-06-21. Quantum Phase Transition in the Twisted Three-Leg Spin Tube. https://doi.org/10.1016/j.poly.2017.05.024

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