一维更键Heisenberg反铁磁链系统的磁振子色散曲线的研究  

Study of magnon dispersion curves in one-dimensionl heisenberg antiferromagnetic chain with bocnd alternaton

作　　者：朴林鹤[1] 成泰民[2] 栾玉国[1] 周永军[1] 

机构地区：[1]沈阳航空工业学院,辽宁沈阳110034 [2]东北大学物理系,辽宁沈阳110006

出　　处：《沈阳工业大学学报》2004年第2期227-230,共4页Journal of Shenyang University of Technology

摘　　要：利用算符的运动方程理论计算了一维更键Heisenberg自旋反铁磁链系统的线性色散关系.并对其色散曲线进行了讨论.在Γ点(k=0的点),又讨论了随各项参数的变化对磁振子能量的影响.In the paper, relation of dispersion curves of spin antiferromagnetic system is dedaced based on (equation) of motion on operators. And the dispersion curves are discussed.The influence because of each parameter changes on magnon energy is investigated at Γ point (point of k=0).

关 键 词：一维更键 反铁磁 色散曲线 自旋算符 

分 类 号：O482.525[理学—固体物理]