The positive correlation between interface Dzyaloshinskii–Moriya interaction and damping-like spin Hall torque in the Ta/Pt/CoFeB/MgO/Ta system

• DOI: 10.7567/1882-0786/ab3c89
• Publication Date: 2019-08-19T22:16:08Z
• Authors: Qihan Zhang; Yifei Chen; Yuqiang Zheng; Jiangwei Cao; Desheng Xue; Xiaolong Fan
• Keywords: Interface (matter)

Interfacial Dzyaloshinskii–Moriya interaction (iDMI) receives a lot of attention due to its potential for spintronics devices. The physical understanding the artificial approaches that control strength iDMI remains complicated. In Ta/Pt/CoFeB/MgO/Ta system, D and efficiency damping-like spin Hall torque (DL-SHT) have been quantified utilizing Brillouin light scattering, spin-torque ferromagnetic resonance, magnetoresistance. A linear relationship between DL-SHT was obtained, indicating governed by itinerant electron is comprehensive parameter study.