Spin-independent transparency of pure spin current at normal/ferromagnetic metal interface

Runrun Hao; Shishou Kang; Hai Zhong; Yun Kang; Yufei Tian; Shishen Yan; Guolei Liu; Guangbing Han; Shuyun Yu; Liangmo Mei

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Spin-independent transparency of pure spin current at normal/ferromagnetic metal interface

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The spin transparency at the normal/ferromagnetic metal (NM/FM) interface was studied in Pt/YIG/Cu/FM multilayers.The spin current generated by the spin Hall effect (SHE) in Pt flows into Cu/FM due to magnetic insulator YIG blocking charge current and transmitting spin current via the magnon current.Therefore,the nonlocal voltage induced by an inverse spin Hall effect (ISHE) in FM can be detected.With the magnetization of FM parallel or antiparallel to the spin polarization of pure spin currents (σsc),the spin-independent nonlocal voltage is induced.This indicates that the spin transparency at the Cu/FM interface is spin-independent,which demonstrates that the influence of spin-dependent electrochemical potential due to spin accumulation on the interfacial spin transparency is negligible.Furthermore,a larger spin Hall angle of Fe20Ni80 (Py) than that of Ni is obtained from the nonlocal voltage measurements.

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《中国物理：英文版》 |2018年第3期|401-404|共4页
作者
Runrun Hao; Shishou Kang; Hai Zhong; Yun Kang; Yufei Tian; Shishen Yan; Guolei Liu; Guangbing Han; Shuyun Yu; Liangmo Mei;
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作者单位

School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;

School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;

School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;

School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;

School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;

School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;

School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;

School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;

School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;

School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;

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Spin-independent transparency of pure spin current at normal/ferromagnetic metal interface

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