论文标题
统一的旋转和电荷理论
Unified theory of spin and charge in a ferromagnet
论文作者
论文摘要
我们得出了统一的旋转和电荷自由度理论。从集体坐标的粗粒透视观察了自旋转移扭矩和自旋电动力。所得的运动方程反映了保守，陀螺（浆果相）和耗散力的平衡。然后，我们通过添加电荷来扩大集体坐标的空间。绝热的自旋转移扭矩和自旋EMF被证明是陀螺力。他们的非绝热对应物是耗散力。
We derive a unified theory of spin and charge degrees of freedom in a ferromagnet. The spin-transfer torque and spin electromotive force are examined from the coarse-grained perspective of collective coordinates. The resulting equations of motion reflect a balance of conservative, gyroscopic (Berry-phase), and dissipative forces. We then expand the space of collective coordinates by adding the electric charge. The adiabatic spin-transfer torque and spin emf turn out to be a gyroscopic force; their nonadiabatic counterparts are a dissipative force.
