Non-Abelian gauge field theory of the spin-orbit interaction and a perfect spin filter
Non-Abelian gauge field theory of the spin-orbit interaction and a perfect spin filter
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DOI：
10.1103/physreva.75.032107
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发表时间：
2007-03-01
影响因子：
2.9
通讯作者：
Nakamura, Hiroaki
中科院分区：
文献类型：
--
作者：
Hatano, Naomichi;Shirasaki, Ryoen;Nakamura, Hiroaki
我们指出二维Rashba和Dresselhaus自旋轨道相互作用可以看作是一个Yang-Mills非阿贝尔规范场。由规范场产生的物理场使电子波函数具有自旋相关的相位，这通常被称为阿哈罗诺夫-卡希尔相位。在AB环上应用这个非阿贝尔场和通常的矢量势，我们可以使干涉条件在整个能量范围内对自旋的一个分量完全破坏，而对自旋的另一个分量完全建设。这使我们能够构造一个完美的自旋过滤器。
We point out that the Rashba and Dresselhaus spin-orbit interactions in two dimensions can be regarded as a Yang-Mills non-Abelian gauge field. The physical field generated by the gauge field gives the electron wave function a spin-dependent phase which is frequently called the Aharonov-Casher phase. Applying on an AB ring this non-Abelian field together with the usual vector potential, we can make the interference condition completely destructive for one component of the spin while completely constructive for the other component of the spin over the entire energy range. This enables us to construct a perfect spin filter.