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arXiv 1509.04337cond-mat.mtrl-sci
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从Y-$_3$-Fe-$_5$ O-$_{12}$到NiO的反铁磁自旋输运

Antiferromagnonic Spin Transport from Y$_3$Fe$_5$O$_{12}$ into NiO

Hailong Wang, Chunhui Du, P. Chris Hammel, Fengyuan Yang

摘要:

我们观察到高效的动态自旋注入Y $_3$ Fe $_5$ O $_{12}$(YIG)到NiO,反铁磁(AF)绝缘体,通过强耦合,和强大的自旋传播NiO高达100 nm的厚度介导的AF自旋相关性。引人注目的是,在YIG和Pt之间插入薄NiO层显著增强了驱动到Pt中的自旋电流,这表明在YIG/NiO和NiO/Pt界面处都具有非常高的自旋转移效率。这提供了一个强大的平台,研究AF自旋泵和AF动力学,以及探索自旋操纵定制的结构,包括金属和绝缘铁磁体,反铁磁体和磁性材料。

英文摘要:

We observe highly efficient dynamic spin injection from Y$_3$Fe$_5$O$_{12}$ (YIG) into NiO, an antiferromagnetic (AF) insulator, via strong coupling, and robust spin propagation in NiO up to 100-nm thickness mediated by its AF spin correlations. Strikingly, the insertion of a thin NiO layer between YIG and Pt significantly enhances the spin currents driven into Pt, suggesting exceptionally high spin transfer efficiency at both YIG/NiO and NiO/Pt interfaces. This offers a powerful platform for studying AF spin pumping and AF dynamics as well as for exploration of spin manipulation in tailored structures comprising metallic and insulating ferromagnets, antiferromagnets and nonmagnetic materials.

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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