自旋轨道耦合引起的电偶极矩

Electric Polarization due to Spin-Orbit Coupling

文章介绍了由于自旋轨道耦合导致的电子的电偶极矩在自旋电子学理论中的基本意义.研究发现,该电偶极矩与自旋流张量的反对称部分直接相关.它不仅直接导致可观测的电磁学效应,而且与电子在电场受到的力以及力矩有关,从而为自旋的电子学操控提供了可能.

The electric dipole of the electron due to spin-orbit coupling plays an essential role in spintronics theory. We have found that this dipole is directly related to the antisymmetric components of the spin current tensor. It not only induces the observable electromagnetic effects directly but also is related to the force and torque that the electron feels in the electric field, which provides the possibility to manipulate the spin by electrical means.