arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2303.15085cond-mat.mtrl-scicond-mat.mes-hall
收藏

耦合$_3$ $_5$ O $_{12}$ /$_3$ Fe-PDMATHAAB-O $_{12}$ /Pt三层膜自旋动力学的温度相关研究

Temperature dependent study of the spin dynamics of coupled Y$_3$Fe$_5$O$_{12}$/Gd$_3$Fe$_5$O$_{12}$/Pt trilayers

Felix Fuhrmann, Sven Becker, Akashdeep Akashdeep, Zengyao Ren, Mathias Weiler, Gerhard Jakob, Mathias Kläui

摘要:

在本研究中,我们借由铁磁共振及反自旋霍尔效应所侦测到的抽运自旋电流,来研究Y $_3$ Fe $_5$ O $_{12}$(YIG)/ Gd $_3$ Fe $_5$ O $_{12}$(GdIG)/ Pt三层系统的动态响应。这三层系统提供了独特的机会,调查的亚铁磁GdIG的自旋动力学,接近其补偿温度。我们表明,我们的三层作为一个高度可调的自旋电源。我们的实验结果得到了微磁模拟的支持。由于在顶部Pt层中检测到的自旋电流明显由GdIG层主导,这提供了独特的机会来研究GdIG的激发和动态特性,同时将其与异质结构的宽带FMR吸收光谱进行比较。

英文摘要:

In this study, we investigate the dynamic response of a Y$_3$Fe$_5$O$_{12}$ (YIG)/ Gd$_3$Fe$_5$O$_{12}$ (GdIG)/ Pt trilayer system by measurements of the ferromagnetic resonance (FMR) and the pumped spin current detected by the inverse spin Hall effect. This trilayer system offers the unique opportunity to investigate the spin dynamics of the ferrimagnetic GdIG, close to its compensation temperature. We show that our trilayer acts as a highly tunable spin current source. Our experimental results are supported by micro-magnetic simulations. As the detected spin current in the top Pt layer is distinctly dominated by the GdIG layer, this gives the unique opportunity to investigate the excitation and dynamic properties of GdIG while comparing it to the broadband FMR absorption spectrum of the heterostructure.

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。

↑