论文标题
sr（nb $ _x $ ti $ _ {1-x} $）sr中反向自旋效应的依赖性
Dependence of the Inverse Spin Hall Effect in Sr(Nb$_x$Ti$_{1-x}$)O$_3$ on the Nb concentration
论文作者
论文摘要
我们使用旋转泵将NB掺杂的Srtio $ _3 $中的自旋矫正效果和反相反的自旋霍尔效应，使用旋转泵向Srtio $ _3 $注射旋转。结果表明，当掺杂水平升高时，自旋注射会增加。但是，当NB占用超过$ \ sim $ 2 \％的Ti站点时，自旋大厅的角度会降低，这是由于超出了这种浓度的原因，电子贡献了旋转厅的效应来自NB的$ d- $ orbitals而不是来自Ti的nb。我们的工作表明轨道职业在（反向）旋转大厅效应中的重要性。我们可以探索可控的自旋和氧化旋转中的电荷互转。
We measured the spin rectify effect and the inverse spin Hall effect in Nb-doped SrTiO$_3$ by injecting the spins from ferromagnetic thin films to SrTiO$_3$ using spin pumping. It was shown that the spin injection is increased when the doping level is increased. However, the spin Hall angle decreases when Nb occupies more than $\sim$2\% of the Ti sites, which is due to that beyond this concentration, the electron contributed the spin Hall effect is from the $d-$orbitals of Nb instead those from the Ti. Our work points to the importance of orbital occupations in the (inverse) spin Hall effect. We may explore controllable spin and charge interconversion in oxide spintronics.
