Quantum Phase Transition in the Twisted Three-Leg Spin Tube

Keisuke Ito; Shun Yokoo; Kiyomi Okamoto; Toru Sakai

doi:10.1016/j.poly.2017.05.024

Quantum Phase Transition in the Twisted Three-Leg Spin Tube

Strongly Correlated Electrons 2017-06-22 v1

Authors: 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.

Keywords

quantum spin tube magnetization plateau quantum phase transition easy-plane anisotropy numerical diagonalization phenomenological renormalization

Cite

@article{arxiv.1706.06947,
  title  = {Quantum Phase Transition in the Twisted Three-Leg Spin Tube},
  author = {Keisuke Ito and Shun Yokoo and Kiyomi Okamoto and Toru Sakai},
  journal= {arXiv preprint arXiv:1706.06947},
  year   = {2017}
}

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