自旋对量子线中弱耦合磁极化子性质的影响  

Effect of Spin on the Properties of Weak-coupling Magnetopolaron in Quantum Wire

作　　者：刘宝海[1] 张亚卿[1] 汪晓武[1] 李志新[1] 

机构地区：[1]河北科技师范学院数理系,河北秦皇岛066004

出　　处：《河北科技师范学院学报》2009年第2期47-49,80,共4页Journal of Hebei Normal University of Science & Technology

摘　　要：采用线性组合算符和幺正变换方法研究了量子线中弱耦合磁极化子的性质。得到了考虑自旋影响时量子线中弱耦合磁极化子的基态能量,并进行了数值计算。结果表明:考虑自旋影响时,量子线中磁极化子的基态能量分裂成两个分支。磁极化子基态能量随量子线束缚强度的增大而增大,随耦合强度的增大而减小。自旋对磁极化子基态能量的影响不能忽略。The properties of weak-coupling magnetopolaron were studied by using the linear combination and the unitary transformation methods in quantum wire. Considering the effect of the spin, the ground-state energy of weak-coupling magnetopolaron is obtained in quantum wire. Numerical calculations were performed and the results illustrated that the ground-state energy of magnetopolaron split into two branches considering the influence of the spin in quantum wire. The ground-state energy of magnetopolaron increased with the increase of the bound strength of quantum wire and decreased with the increase of the couple strength. This showed that the effects of the spin on the ground-state energy of magnetopolaron cannot be ignored.

关 键 词：量子线 自旋 磁极化子 基态能量 

分 类 号：O469[理学—凝聚态物理]