Geometric size dependence of spin-mixing conductance at Pt/YIG interface
Geometric size dependence of spin-mixing conductance at Pt/YIG interface
复制标题
Pt/YIG 界面自旋混合电导的几何尺寸依赖性
DOI:
10.1063/5.0049369
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发表时间:
2021-05
影响因子:
4
通讯作者:
Jiang Y.
中科院分区:
文献类型:
--
作者:
Liu Q. B.;Meng K. K.;Zheng S. Q.;Miao J.;Xu X. G.;Jiang Y.
The spin-mixing conductance (SMC) is an essential parameter for ferromagnetic-insulators-based spintronics devices. Here, we study the influence of device boundary on local spin transport properties in platinum (Pt)/yttrium iron garnet (YIG) films by reducing the lateral size of the devices. An obvious fluctuation of spin Hall magnetoresistance, Gilbert damping coefficient, and effective spin Hall angle with restricting the size of YIG films has been found at room temperature. By employing both harmonic and current-induced spin-torque ferromagnetic resonance measurements, we have found a negligible fluctuation of both the imaginary part of SMC and effective magnetization with varying the geometric size of devices. In contrast, the real part of SMC at the Pt/YIG interface has been rigidly altered. Our results show that the SMC dramatically depends on the boundary effect from Ar+-ion milling.
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通讯作者:
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