Magnetization switching through spin-Hall-effect-induced chiral domain wall propagation

Guoqiang Yu, Pramey Upadhyaya, Kin L. Wong, Wanjun Jiang, Juan G. Alzate, Jianshi Tang, Pedram Khalili Amiri, Kang L. Wang

研究成果: Article同行評審

106 引文 斯高帕斯(Scopus)

摘要

The influence of spin-Hall-effect spin torque (SHE-ST) induced by in-plane charge current was studied in microscale Ta/Co20Fe60B20/TaOx films with perpendicular magnetization. Simultaneous electrical transport and polar magneto-optical Kerr effect (MOKE) imaging experiments were used to investigate the switching dynamics. A rich set of switching behaviors was observed, which can be well understood by analyzing a switching-phase diagram and polar MOKE images, considering the competition between SHE-ST and the externally applied magnetic field. Furthermore, we found that domain walls with a particular chirality were dominant in our devices, which suggests the presence of the Dzyaloshinskii-Moriya interaction in the present material system.

原文English
文章編號104421
期刊Physical Review B - Condensed Matter and Materials Physics
89
發行號10
DOIs
出版狀態Published - 2014 3月 25

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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