论文标题
探测远程轨道孔扭矩
Detection of long-range orbital-Hall torques
论文作者
论文摘要
我们报告并量化了NB和RU产生的大型轨道旋转扭矩，我们可以从扭矩对铁磁体的强依赖性中识别出来。与NB（或Ru）/Fecob Bileayers相比，这表现为在NB（或Ru）/Ni Bilayers中测得的阻尼状扭矩中的符号逆转和强大的增强。 Ni（或Ru）/Ni双层中Ni的厚度依赖性揭示了铁磁体中轨道转运的远距离性质，这些依赖性与在几个矛盾中发生的Ferromagnet中的常规旋转吸收明显不同，因此它与轨道大厅的扭矩与旋转的旋转大厅扭矩区分开。
We report and quantify a large orbital-Hall torque generated by Nb and Ru, which we identify from a strong dependence of torques on the ferromagnets. This is manifested as a sign reversal and strong enhancement in the damping-like torques measured in Nb (or Ru)/Ni bilayers as compared to Nb (or Ru)/FeCoB bilayers. The long-range nature of orbital transport in the ferromagnet is revealed by the thickness dependences of Ni in Nb (or Ru)/Ni bilayers which are markedly different from the regular spin absorption in the ferromagnet that takes place within a few angstroms and thus it uniquely distinguishes the orbital Hall torque from the spin Hall torque.
