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arXiv 1906.03124cond-mat.mes-hall
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自旋阀中反铁磁体对自旋流的角分辨弛豫

Angle resolved relaxation of spin currents by antiferromagnets in spin valves

Dmytro M. Polishchuk, Akashdeep Kamra, Taras I. Polek, Arne Brataas, Vladislav Korenivski

摘要:

我们观察并分析了自旋阀中反铁磁体对纯自旋电流的可调弛豫。这是通过仔细控制共振激发的铁磁层泵浦自旋电流和反铁磁层的Néel矢量之间的角度来实现的。观察到的效果作为一个角度依赖的自旋泵的铁磁共振线宽的贡献。自旋混合电导之间的相互作用,往往被忽视,纵向自旋电导被发现是我们的观察,这是在最近的预测相关的铁磁自旋阀。

英文摘要:

We observe and analyze tunable relaxation of a pure spin current by an antiferromagnet in spin-valves. This is achieved by carefully controlling the angle between a resonantly excited ferromagnetic layer pumping the spin current and the Néel vector of the antiferromagnetic layer. The effect is observed as an angle-dependent spin-pumping contribution to the ferromagnetic resonance linewidth. An interplay between spin-mixing conductance and, often disregarded, longitudinal spin conductance is found to underlie our observations, which is in agreement with a recent prediction for related ferromagnetic spin valves.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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