中国物理B ›› 2023, Vol. 32 ›› Issue (9): 90304-090304.doi: 10.1088/1674-1056/acac0c

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Commensurate and incommensurate Haldane phases for a spin-1 bilinear-biquadratic model

Yan-Wei Dai(代艳伟)1,†, Ai-Min Chen(陈爱民)2,‡, Xi-Jing Liu(刘希婧)3, and Yao-Heng Su(苏耀恒)2   

  1. 1 Centre for Modern Physics and Department of Physics, Chongqing University, Chongqing 400044, China;
    2 School of Science, Xi'an Polytechnic University, Xi'an 710048, China;
    3 The School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400044, China
  • 收稿日期:2022-09-15 修回日期:2022-11-17 接受日期:2022-12-16 发布日期:2023-08-23
  • 通讯作者: Yan-Wei Dai, Ai-Min Chen E-mail:daiyw@cqu.edu.cn;chenaimin_xa@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11805285), the Natural Science Foundation of Shaanxi Province of China (Grant No. 2022JM-033), and the Science and Technology Research Program of Chongqing Municipal Education Commission (Grant No. KJQN 201900703).

Commensurate and incommensurate Haldane phases for a spin-1 bilinear-biquadratic model

Yan-Wei Dai(代艳伟)1,†, Ai-Min Chen(陈爱民)2,‡, Xi-Jing Liu(刘希婧)3, and Yao-Heng Su(苏耀恒)2   

  1. 1 Centre for Modern Physics and Department of Physics, Chongqing University, Chongqing 400044, China;
    2 School of Science, Xi'an Polytechnic University, Xi'an 710048, China;
    3 The School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400044, China
  • Received:2022-09-15 Revised:2022-11-17 Accepted:2022-12-16 Published:2023-08-23
  • Contact: Yan-Wei Dai, Ai-Min Chen E-mail:daiyw@cqu.edu.cn;chenaimin_xa@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11805285), the Natural Science Foundation of Shaanxi Province of China (Grant No. 2022JM-033), and the Science and Technology Research Program of Chongqing Municipal Education Commission (Grant No. KJQN 201900703).

摘要: Commensurate and incommensurate Haldane phases for a spin-1 bilinear-biquadratic model are investigated using an infinite matrix product state algorithm. The bipartite entanglement entropy can detect a transition point between the two phases. In both phases, the entanglement spectrum shows double degeneracy. We calculate the nonlocal order parameter of the bond-centered inversion in both phases, which rapidly approaches a saturation value of -1 as the segment length increases. The nonlocal order parameter of the bond-centered inversion with a saturation value -1 and the nonzero value string order indicate that the Haldane phase is a symmetry-protected topological phase. To distinguish the commensurate and incommensurate Haldane phases, the transversal spin correlation and corresponding momentum distribution of the structure factor are analyzed. As a result, the transversal spin correlations exhibit different decay forms in both phases.

关键词: commensurate and incommensurate phases, symmetry-protected topological phase, transversal spin correlation

Abstract: Commensurate and incommensurate Haldane phases for a spin-1 bilinear-biquadratic model are investigated using an infinite matrix product state algorithm. The bipartite entanglement entropy can detect a transition point between the two phases. In both phases, the entanglement spectrum shows double degeneracy. We calculate the nonlocal order parameter of the bond-centered inversion in both phases, which rapidly approaches a saturation value of -1 as the segment length increases. The nonlocal order parameter of the bond-centered inversion with a saturation value -1 and the nonzero value string order indicate that the Haldane phase is a symmetry-protected topological phase. To distinguish the commensurate and incommensurate Haldane phases, the transversal spin correlation and corresponding momentum distribution of the structure factor are analyzed. As a result, the transversal spin correlations exhibit different decay forms in both phases.

Key words: commensurate and incommensurate phases, symmetry-protected topological phase, transversal spin correlation

中图分类号:  (Quantum information)

  • 03.67.-a
03.67.Mn (Entanglement measures, witnesses, and other characterizations) 05.70.Fh (Phase transitions: general studies) 75.40.Mg (Numerical simulation studies)