Competing phases in spin-1/2 J1-J2 chain with easy-plane anisotropy

Masahiro Sato, Shunsuke Furukawa, Shigeki Onoda, Akira Furusaki

研究成果: Article査読

14 被引用数 (Scopus)

抄録

We summarize our theoretical findings on the ground-state phase diagram of the spin-1/2 XXZ chain having competing nearest-neighbor (J1) and antiferromagnetic next-nearest-neighbor (J2) couplings. Our study is mainly concerned with the case of ferromagnetic J1, and the case of antiferromagnetic J1 is briefly reviewed for comparison. The phase diagram contains a rich variety of phases in the plane of J1/J 2 versus the XXZ anisotropy Δ: vector-chiral phases, Néel phases, several dimer phases, and Tomonaga-Luttinger liquid phases. We discuss the vector-chiral order that appears for a remarkably wide parameter space, successive Néel-dimer phase transitions, and an emergent nonlocal string order in a narrow region of ferromagnetic J1 side.

本文言語English
ページ(範囲)901-908
ページ数8
ジャーナルModern Physics Letters B
25
12-13
DOI
出版ステータスPublished - 2011 5 30
外部発表はい

ASJC Scopus subject areas

  • 統計物理学および非線形物理学
  • 凝縮系物理学

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