自旋电子学
磁化
材料科学
凝聚态物理
自旋霍尔效应
异质结
交换偏差
霍尔效应
自旋(空气动力学)
光电子学
磁各向异性
自旋极化
磁场
铁磁性
物理
量子力学
热力学
电子
作者
Ruiyue Chu,Bin Cui,Liang Liu,Weikang Liu,Tingting Miao,Xue Ren,Heng Chen,Xiangxiang Zhao,Xinyi Wu,Suqing Wu,Jifan Hu
标识
DOI:10.1021/acsami.3c02079
摘要
Reversal of magnetization via current-induced spin-orbit torque (SOT) is one of the core issues in spintronics. However, an in-plane assistant field is usually required for the deterministic switching of a perpendicularly magnetized system. Additionally, the efficiency of SOT is low, which is detrimental to device applications. This study achieved a reversible and non-volatile control of the critical current for magnetization switching and spin Hall efficiency in the TaN/W/Pt/Co/Pt/TaN heterostructures by ionic liquid (IL) gating-induced hydrogen ion adsorption and desorption in the upper Pt layer. Furthermore, the thinning of the Pt and TaN capping layers activated the oxygen ion migration toward the Co layer under IL gating, resulting in an exchange bias field and allowing field-free magnetization switching and Boolean logic operation. The results of this study offer an intriguing opportunity to promote the development of SOT-based spintronic devices from the perspective of iontronics with low energy dissipation.
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