Takahashi S, Maekawa S
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.
Phys Rev Lett. 2002 Mar 18;88(11):116601. doi: 10.1103/PhysRevLett.88.116601. Epub 2002 Mar 4.
We propose a novel anomalous Hall effect caused by the spin-polarized current in superconductors (SC). The spin-polarized quasiparticles flowing in SC are deflected by spin-orbit scattering to yield a quasiparticle charge imbalance in the transverse direction. Overall charge neutrality gives rise to a compensating change in the number of Cooper pairs. A transverse electric field builds up as opposed to an acceleration of the Cooper pairs, producing the Hall voltage. It is found that the Hall voltages due to the side jump and skew scattering mechanisms have different temperature dependence in the superconducting state. A spin-injection Hall device to generate the ac Josephson effect is proposed.
我们提出了一种由超导体（SC）中的自旋极化电流引起的新型反常霍尔效应。在超导体中流动的自旋极化准粒子通过自旋轨道散射发生偏转，从而在横向产生准粒子电荷不平衡。整体电荷中性导致库珀对数量的补偿性变化。与库珀对的加速相反，会建立起一个横向电场，从而产生霍尔电压。研究发现，在超导状态下，由侧跳和斜散射机制引起的霍尔电压具有不同的温度依赖性。我们还提出了一种用于产生交流约瑟夫森效应的自旋注入霍尔器件。
