中国物理B ›› 2010, Vol. 19 ›› Issue (11): 117502-117503.doi: 10.1088/1674-1056/19/11/117502

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Influence of Dzyaloshinskii-Moriya and Kaplan-Shekhtman-Entinwohlman-Aharony superexchange interactions on ground state properties of the one-dimensional spin-Peilers model in open chain

石云龙1, 王治国2, 黄仙山3, 刘海莲4   

  1. (1)Institute of Solid State Physics, Shanxi Datong University, Datong 037009, China; Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, China; (2)Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, China; (3)School of Mathematics and Physics, Anhui University of Technology, Maanshan 243000, China; (4)School of Mathematics and Physics, Anhui University of Technology, Maanshan 243000, China; Institute of Solid State Physics, Shanxi Datong University,
  • 收稿日期:2010-03-18 修回日期:2010-05-20 出版日期:2010-11-15 发布日期:2010-11-15
  • 基金资助:
    Project supported by the Natural Science Research Key Program of Higher Education Institution of Anhui Province, China (Grant No. KJ2010A335), and the Youth Science Research Program of Anhui University of Technology, China (Grant No. QZ200824).

Influence of Dzyaloshinskii-Moriya and Kaplan-Shekhtman-Entinwohlman-Aharony superexchange interactions on ground state properties of the one-dimensional spin-Peilers model in open chain

Liu Hai-Lian(刘海莲)a)b), Huang Xian-Shan(黄仙山)a),Wang Zhi-Guo(王治国)c), and Shi Yun-Long(石云龙)b)c)   

  1. a School of Mathematics and Physics, Anhui University of Technology, Maanshan 243000, China; b Institute of Solid State Physics, Shanxi Datong University, Datong 037009, China; c Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, China
  • Received:2010-03-18 Revised:2010-05-20 Online:2010-11-15 Published:2010-11-15
  • Supported by:
    Project supported by the Natural Science Research Key Program of Higher Education Institution of Anhui Province, China (Grant No. KJ2010A335), and the Youth Science Research Program of Anhui University of Technology, China (Grant No. QZ200824).

摘要: The effects of the Dzyaloshinskii--Moriya (DM) and the Kaplan--Shekhtman--Entinwohlman--Aharony (KSEA) superexchange interactions on the ground state properties of the one-dimensional spin-Peilers system in open chain are studied by using the Lanczos numerical method. The study concentrates mainly on the influence of systemic dimerisation in open chain. The results show that systemic ground state energy density varies with dimerisation parameter δ in different DM interactions, and there exists a special point δc where the DM interaction has no influence on the systemic dimerisation, no matter whether the DM interaction is relative or irrelative to systemic dimerisation (η = 1 or η = 0). The KSEA interaction has no fixed special point, but the points of intersection are dense relatively in a certain numberical value range, and sparse in other numberical value ranges. So we can conclude that the antisymmetric anisotropy DM interaction differs from the symmetric anisotropy KSEA interaction, but they are analogous in the sense of the influence of systemic dimerisation in open chain.

Abstract: The effects of the Dzyaloshinskii–Moriya (DM) and the Kaplan–Shekhtman–Entinwohlman–Aharony (KSEA) superexchange interactions on the ground state properties of the one-dimensional spin-Peilers system in open chain are studied by using the Lanczos numerical method. The study concentrates mainly on the influence of systemic dimerisation in open chain. The results show that systemic ground state energy density varies with dimerisation parameter $\delta$ in different DM interactions, and there exists a special point $\delta$c where the DM interaction has no influence on the systemic dimerisation, no matter whether the DM interaction is relative or irrelative to systemic dimerisation (η = 1 or η = 0). The KSEA interaction has no fixed special point, but the points of intersection are dense relatively in a certain numberical value range, and sparse in other numberical value ranges. So we can conclude that the antisymmetric anisotropy DM interaction differs from the symmetric anisotropy KSEA interaction, but they are analogous in the sense of the influence of systemic dimerisation in open chain.

Key words: dimerisation, Dzyaloshinskii–Moriya interaction, Kaplan–Shekhtman–Entinwohlman–Aharony interaction, open chain

中图分类号:  (General theory and models of magnetic ordering)

  • 75.10.-b
75.30.Et (Exchange and superexchange interactions)