Study of spin mixing conductance of single oriented Pt in Pt/Ni81Fe19 heterostructure by spin pumping
Study of spin mixing conductance of single oriented Pt in Pt/Ni81Fe19 heterostructure by spin pumping
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DOI：
10.1063/5.0035912
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发表时间：
2021-03
期刊：
影响因子：
1.6
通讯作者：
Y. You;Hiroto Sakimura;T. Harumoto;Yoshio Nakamura;Ji Shi;C. Song;F. Pan;K. Ando
中科院分区：
文献类型：
--
作者：
Y. You;Hiroto Sakimura;T. Harumoto;Yoshio Nakamura;Ji Shi;C. Song;F. Pan;K. Ando
铁磁层和纳米层的自旋混合电导g↑↓表征了自旋电流通过界面的传输效率。探索g↑↓与NM层的晶格取向等结构参数之间的关系对于设计有效的自旋电子器件至关重要。本文采用自旋抽运的方法，对两种单取向Pt和Ni_（81）Fe_（19）（Py）的自旋混合电导进行了实验研究。Pt（100）/Py和Pt（111）/Py双层膜的g↑↓分别为8.6 ± 0.9 nm−2和10.8 ± 1.6 nm−2，表明金属NM层的晶向对g↑↓没有显著影响，这与理论预测一致。
The spin mixing conductance g↑↓ of a ferromagnetic and a nonmagnetic (NM) layer characterizes the transport efficiency of spin current through the interface. Exploration of the relationship between g↑↓ and structural parameters such as the lattice orientation of the NM layer is critical to design effective spintronics devices. Here, the spin mixing conductance of two types of single oriented Pt and Ni81Fe19 (Py) was studied experimentally, with the method of spin pumping. The obtained g↑↓ for Pt (100)/Py and Pt (111)/Py bilayers is 8.6 ± 0.9 nm−2 and 10.8 ± 1.6 nm−2, respectively, revealing the fact that the crystalline orientation of the metallic NM layer has no prominent impact on g↑↓, which is consistent with the theoretical prediction.