Effect of Annealing on Interfacial Spin Polarization and Resistance in Permalloy/MgO/Ag Lateral Spin Valves
Effect of Annealing on Interfacial Spin Polarization and Resistance in Permalloy/MgO/Ag Lateral Spin Valves
复制标题
退火对坡莫合金/MgO/Ag横向自旋阀界面自旋极化和电阻的影响
DOI：
10.1143/apex.4.093004
复制
发表时间：
2011-09-01
影响因子：
2.3
通讯作者：
Otani, YoshiChika
中科院分区：
文献类型：
--
作者：
Wang, Le;Fukuma, Yasuhiro;Otani, YoshiChika
研究了退火对坡莫合金/MgO/Ag横向自旋阀非局域自旋阀信号的影响。结果表明，退火到400摄氏度的MgO界面的自旋极化推高到38%，导致非局域自旋阀信号增加到77.2 m Ω。退火温度进一步升高至500 ℃，导致自旋阀信号降低48.0 m Ω。然而，55%的高自旋极化可能有利于增强横向自旋阀中的自旋积累。(C)2011日本应用物理学会
We have investigated the effect of annealing on the nonlocal spin valve signal in lateral spin valves with permalloy/MgO/Ag junctions. The results show that annealing up to 400 degrees C pushes up the spin polarization of the MgO interface to 38%, resulting in an increase in the nonlocal spin valve signal of up to 77.2 m Omega. Further increase in the annealing temperature up to 500 degrees C causes a decrease in the spin valve signal of 48.0 m Omega. However, the high spin polarization of 55% could be advantageous for the enhancement of the spin accumulation in lateral spin valves. (C) 2011 The Japan Society of Applied Physics