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D-M相互作用对Spin-Peierls系统二聚化的影响
引用本文:杨治国,王治国.D-M相互作用对Spin-Peierls系统二聚化的影响[J].商丘师范学院学报,2002,18(2):16-18.
作者姓名:杨治国  王治国
作者单位:同济大学,物理系,上海,200092
摘    要:利用Lanczos数值方法研究了Spin-Peierls系统中D-M相互地于二聚化的影响,得到的结论表明:当D-M相互作用与晶格畸变无关时,它的作用将抑止二聚化,当D-M相互作用是格点交错时,它可能会有利于二聚化,随着交错系数的逐渐变大,D-M相互作用从抑止二聚化变为增强二聚化,最后给出了交错系数的临界值。

关 键 词:D-M相互作用  Spin-Peierls系统  二聚化  lanczos方法
文章编号:1008-2662(2002)02-0016-03
修稿时间:2002年1月15日

The influence of dzyaloshinskii-moriya interaction on the dimerization in Spin-Peierls systems
YANG Zhi-guo,WANG Zhi-guo.The influence of dzyaloshinskii-moriya interaction on the dimerization in Spin-Peierls systems[J].Journal of Shangqiu Teachers College,2002,18(2):16-18.
Authors:YANG Zhi-guo  WANG Zhi-guo
Abstract:By Lanczos numerical method. The influence of Dzyaloshinskii-Moriya(D-M) interaction on the dimer-ization in Spin-Peierls systems is studied. The ground sate of the Spin-Peierls system is still a dimerized phase when D-M interaction is present. The results show that the uniform D-M interaction is always against dimeriza-tion but the staggered D-M interaction may act in favour of or against dimerization. There exists a critical point where the staggered D-M interaction has no influence on dimerization.
Keywords:D-M interaction  Spin-Peierls system  dimerization  Lanczos method
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