Spin-Flip Process of Polarons in Conjugated Polymers with Magnetic Impurities
Spin-Flip Process of Polarons in Conjugated Polymers with Magnetic Impurities
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DOI：
10.1088/0256-307x/26/8/087203
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发表时间：
2009-08
影响因子：
3.5
通讯作者：
Zhao Hui;Xu-Ming Zhang;An Zhong;Yu-Guang Chen;Chang-qin Wu
中科院分区：
文献类型：
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作者：
Zhao Hui;Xu-Ming Zhang;An Zhong;Yu-Guang Chen;Chang-qin Wu
在外电场的驱动下，自旋为1/2且带有±e电荷的极化子在高分子链中以恒定速度运动。当极化子通过一个特定的位置，通过自旋交换相互作用耦合到磁性杂质，它的自旋经历自旋翻转过程，如果它是反平行于杂质自旋。我们的数值模拟表明：（a）在散射过程中，极化子和杂质之间进行了类似交换的操作;（B）极化子可能是分子尺度上的信息载体.
Being driven by an external electric field, a polaron carrying both spin 1/2 and charge ±e moves at a constant speed in a polymer chain. When the polaron passes through a specific site, which couples to a magnetic impurity via spin-exchange interactions, its spin undergoes a spin-flip process if it is antiparallel to the impurity spin. Our numerical simulation shows that (a) a swap-like operation is performed between the polaron and impurity during the scattering process (b) polarons might be good candidates to be information carriers in the molecular scale.