Efficient conversion of orbital Hall current to spin current for spin-orbit torque switching
| العنوان: | Efficient conversion of orbital Hall current to spin current for spin-orbit torque switching |
|---|---|
| المؤلفون: | Soogil Lee, Nyun Jong Lee, Mingu Kang, Jaimin Kang, Sanghoon Kim, Kab-Jin Kim, Kyung Jin Lee, Yuriy Mokrousov, Jun-Ho Kang, Byong-Guk Park, Taekhyeon Lee, Do-Hyoung Kim, Dongwook Go, Geunhee Lee |
| المصدر: | Communications Physics 4(1), 234 (2021). doi:10.1038/s42005-021-00737-7 Communications Physics, Vol 4, Iss 1, Pp 1-6 (2021) |
| بيانات النشر: | Springer Nature, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | QC1-999, FOS: Physical sciences, General Physics and Astronomy, Applied Physics (physics.app-ph), Astrophysics, Magnetization, Hall effect, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), ddc:530, Spin (physics), Coupling, Physics, Condensed Matter - Materials Science, Condensed matter physics, Spintronics, Condensed Matter - Mesoscale and Nanoscale Physics, Materials Science (cond-mat.mtrl-sci), Physics - Applied Physics, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, QB460-466, Ferromagnetism, Spin Hall effect, Condensed Matter::Strongly Correlated Electrons, Astrophysics::Earth and Planetary Astrophysics, Current (fluid) |
| الوصف: | Spin Hall effect, an electric generation of spin current, allows for efficient control of magnetization. Recent theory revealed that orbital Hall effect creates orbital current, which can be much larger than spin Hall-induced spin current. However, orbital current cannot directly exert a torque on a ferromagnet, requiring a conversion process from orbital current to spin current. Here, we report two effective methods of the conversion through spin-orbit coupling engineering, which allows us to unambiguously demonstrate orbital-current-induced spin torque, or orbital Hall torque. We find that orbital Hall torque is greatly enhanced by introducing either a rare-earth ferromagnet Gd or a Pt interfacial layer with strong spin-orbit coupling in Cr/ferromagnet structures, indicating that the orbital current generated in Cr is efficiently converted into spin current in the Gd or Pt layer. Furthermore, we show that the orbital Hall torque can facilitate the reduction of switching current of perpendicular magnetization in spin-orbit-torque-based spintronic devices. 19 pages, 3 figures |
| اللغة: | English |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb55a484d58d441a09650debd887b2d6Test https://juser.fz-juelich.de/record/904138Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....bb55a484d58d441a09650debd887b2d6 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |