Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany.
Phys Rev Lett. 2013 Oct 25;111(17):176601. doi: 10.1103/PhysRevLett.111.176601. Epub 2013 Oct 23.
We perform a quantitative, comparative study of the spin pumping, spin Seebeck, and spin Hall magnetoresistance effects, all detected via the inverse spin Hall effect in a series of over 20 yttrium iron garnet/Pt samples. Our experimental results fully support present, exclusively spin current-based, theoretical models using a single set of plausible parameters for spin mixing conductance, spin Hall angle, and spin diffusion length. Our findings establish the purely spintronic nature of the aforementioned effects and provide a quantitative description, in particular, of the spin Seebeck effect.
我们通过一系列超过 20 个钇铁石榴石/Pt 样品中的反自旋霍尔效应，对自旋泵浦、自旋塞贝克和自旋霍尔磁电阻效应进行了定量、比较研究。我们的实验结果完全支持目前仅基于自旋电流的理论模型，该模型使用一组合理的自旋混合电导、自旋霍尔角和自旋扩散长度参数。我们的发现确立了上述效应的纯自旋电子学性质，并提供了特别是对自旋塞贝克效应的定量描述。
