论文部分内容阅读
采用Lanczos数值计算方法研究了具有Dzyaloshinskii- Moriya(DM)相互作用和Kaplan -Shekhtman -Entin Wohlman Aharony(KSEA)相互作用的一维spin -Peierls(s- P)系统的基态行为 .计算结果发现KSEA相互作用总是不利于系统二聚化 ,并且它还影响DM相互作用对系统二聚化的贡献 ,甚至可以抵消其作用 ;在某些特定条件下 ,KSEA和DM的共同作用可以破坏系统的二聚化基态而转化为均匀基态 .
The Lanczos numerical method was used to study the ground state behavior of a one-dimensional spin-Peierls (s-P) system with Dzyaloshinskii-Moriya (DM) interaction and Kaplan-Shekhtman -Entin Wohlman Aharony (KSEA) interaction. The effect is always not conducive to dimerization of the system, and it also affects the contribution of the DM interaction to the dimerization of the system, and can even counteract its effect. Under certain conditions, the combination of KSEA and DM can destroy the dimerization of the system The ground state and into a uniform ground state.