Effect of a cosmic string on spin dynamics
Effect of a cosmic string on spin dynamics
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DOI：
10.1103/physrevd.90.125014
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发表时间：
2014-11
影响因子：
5
通讯作者：
D. Chowdhury;B. Basu
中科院分区：
文献类型：
--
作者：
D. Chowdhury;B. Basu
在本文中，我们研究了宇宙弦对自旋电流和霍尔电场的作用。由于背景宇宙弦，系统的修正电场产生重正化自旋轨道耦合，从而产生修正的非阿贝尔规范场。由于电磁场的改变，该缺陷导致 AB 相和 AC 相发生变化。此外，对于随时间变化的电场，我们执行显式解析计算，以导出自旋电场和自旋电流的精确形式，该形式与缺陷参数相关并且属于振荡类型。此外，在德鲁德模型方法中的不对称晶体中，我们研究了宇宙弦参数对宇宙弦感应霍尔电场的依赖性。
In the present paper, we have investigated the role of cosmic string on spin current and Hall electric field. Due to the background cosmic string, the modified electric field of the system generates renormalized spin orbit coupling, which induces a modified non-Abelian gauge field. The defect causes a change in the AB and AC phases appearing due to the modified electromagnetic field. In addition, for a time varying electric field we perform explicit analytic calculations to derive the exact form of spin electric field and spin current, which is defect parameter dependent and of oscillating type. Furthermore, in an asymmetric crystal within the Drude model approach we investigate the dependence of the cosmic string parameters on cosmic string induced Hall electric field.