Evidence of magnetization switching by anomalous spin Hall torque in NiFe
| Autor: | Caihua Wan, T. Y. Ma, Yuze Zhang, Xiufeng Han, Jingxing Dong, Chi Fang, C. Y. Guo, Wanli Yang, Xiao Wang, Mingkun Zhao |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Work (thermodynamics) Condensed matter physics 02 engineering and technology Spin current Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology 01 natural sciences Chirality (electromagnetism) Magnetization Hall effect 0103 physical sciences Perpendicular Torque Condensed Matter::Strongly Correlated Electrons Astrophysics::Earth and Planetary Astrophysics 010306 general physics 0210 nano-technology Spin-½ |
| Zdroj: | Physical Review B. 101 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.101.134417 |
| Popis: | Recently the anomalous Hall effect was predicted as a possible mechanism to produce magnetization-dependent spin current. Here we have applied NiFe/Ru/perpendicular magnetic multilayers and a specific geometry to demonstrate magnetization switching driven by anomalous spin-orbit torque resulting from the bulk anomalous Hall effect. The anomalous spin Hall torque of NiFe is strong enough not only to switch the magnetization of perpendicular Co but also leads to opposite switching chirality compared with the ordinary spin Hall torque. This work confirmed the existence of a strong anomalous spin Hall torque due to anomalous Hall effect, which may lay a foundation to develop spin-orbit torque devices free of heavy metals. |
| Databáze: | OpenAIRE |
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