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Spin-Chirality Separation and S_3-Symmetry Breakings in the Magnetization Plateau of the Quantum Spin Tube
Spin-Chirality Separation and S_3-Symmetry Breakings in the Magnetization Plateau of the Quantum Spin Tube
Okunishi, Kouichi
Sato, Masahiro
Sakai, Toru
Okamoto, Kiyomi
Itoi, Chigak
Copyright(C)2012 The American Physical Society
We study the magnetization plateau state of the three-leg spin-1/2 tube in the strong rung coupling region, where S_3-symmetry breakings and low-energy chirality degree of freedom play crucial roles. On the basis of the effective chirality model and density matrix renormalization group, we clarify that, as the leg coupling increases, the chirality liquid with gapless non-magnetic excitations, the spin imbalance phase and the vector-spin-chirality ordered phase emerge without closing the plateau spin gap. The relevance of these results to experiments is also discussed.
American Physical Society
2012-03
eng
journal article
http://hdl.handle.net/10191/30546
https://niigata-u.repo.nii.ac.jp/records/2261
info:doi/10.1103/PhysRevB.85.054416
AA11187113
10980121
Physical Review B
Physical Review B
85
054416
1
6
https://niigata-u.repo.nii.ac.jp/record/2261/files/85_054416.pdf
application/pdf
542.5 kB
2019-07-29