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arXiv 2103.16867cond-mat.mes-hallcond-mat.mtrl-sci
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Rashba分裂铁磁界面中的自旋电荷转换

Spin charge conversion in Rashba split ferromagnetic interfaces

Olivier Rousseau, Cosimo Gorini, Fatima Ibrahim, Jean-Yves Chauleau, Aurélie Solignac, Ali Hallal, Sebastian Tölle, Mair Chshiev, Michel Viret

摘要:

我们在这里从理论和实验上表明,一个Rashba分裂的电子状态内的铁磁体可以有效地转换成一个动态的自旋积累电压。这种效应被理解为源于Rashba分裂,但具有与磁化方向相关的对称性。它是通过在CoFeB/MgO结构中的自旋泵浦实验测量的,其中发现当Pt取代MgO时,它与起作用的逆自旋霍尔效应一样有效,具有不影响铁磁体中的阻尼的额外优点。

英文摘要:

We show here theoretically and experimentally that a Rashba-split electron state inside a ferromagnet can efficiently convert a dynamical spin accumulation into an electrical voltage. The effect is understood to stem from the Rashba splitting but with a symmetry linked to the magnetization direction. It is experimentally measured by spin pumping in a CoFeB/MgO structure where it is found to be as efficient as the inverse spin Hall effect at play when Pt replaces MgO, with the extra advantage of not affecting the damping in the ferromagnet.

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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