中国物理B ›› 2011, Vol. 20 ›› Issue (12): 120509-120509.doi: 10.1088/1674-1056/20/12/120509

• GENERAL • 上一篇    下一篇

Solitary excitations in one-dimensional ferromagnetic spin chains with biquadratic exchange interaction

余小燕, 陈浩   

  1. Laboratory of Quantum Information Technology, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China
  • 收稿日期:2011-04-15 修回日期:2011-06-17 出版日期:2011-12-15 发布日期:2011-12-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10874049) and the State Key Program for Basic Research of China (Grant No. 2007CB925204).

Solitary excitations in one-dimensional ferromagnetic spin chains with biquadratic exchange interaction

Yu Xiao-Yan(余小燕) and Chen Hao(陈浩)   

  1. Laboratory of Quantum Information Technology, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China
  • Received:2011-04-15 Revised:2011-06-17 Online:2011-12-15 Published:2011-12-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10874049) and the State Key Program for Basic Research of China (Grant No. 2007CB925204).

摘要: By using the traveling wave method, the solutions of the elliptic function wave and the solitary wave are obtained in a ferromagnetic spin chain with a biquadratic exchange interaction, a single ion anisotropic interaction and an anisotropic nearest neighbour interaction. The effects of the biquadratic exchange interaction and the single ion anisotropic interaction on the properties (width, peak and stability) of the soliton are investigated. It is also found that the effects vary with the strengths of these interactions.

Abstract: By using the traveling wave method, the solutions of the elliptic function wave and the solitary wave are obtained in a ferromagnetic spin chain with a biquadratic exchange interaction, a single ion anisotropic interaction and an anisotropic nearest neighbour interaction. The effects of the biquadratic exchange interaction and the single ion anisotropic interaction on the properties (width, peak and stability) of the soliton are investigated. It is also found that the effects vary with the strengths of these interactions.

Key words: biquadratic exchange interaction, elliptic function wave, soliton

中图分类号:  (Solitons)

  • 05.45.Yv
05.45.-a (Nonlinear dynamics and chaos) 75.10.Hk (Classical spin models)