Spin-orbit-torque engineering via oxygen manipulation

Xuepeng Qiu, Kulothungasagaran Narayanapillai, Yang Wu, Praveen Deorani, Dong Hyuk Yang, Woo Suk Noh, Jae Hoon Park, Kyoung Jin Lee, Hyun Woo Lee, Hyunsoo Yang

Research output: Contribution to journalArticle

171 Citations (Scopus)

Abstract

Spin transfer torques allow the electrical manipulation of magnetization at room temperature, which is desirable in spintronic devices such as spin transfer torque memories. When combined with spin-orbit coupling, they give rise to spin-orbit torques, which are a more powerful tool for controlling magnetization and can enrich device functionalities. The engineering of spin-orbit torques, based mostly on the spin Hall effect, is being intensely pursued. Here, we report that the oxidation of spin-orbit-torque devices triggers a new mechanism of spin-orbit torque, which is about two times stronger than that based on the spin Hall effect. We thus introduce a way to engineer spin-orbit torques via oxygen manipulation. Combined with electrical gating of the oxygen level, our findings may also pave the way towards reconfigurable logic devices.

Original languageEnglish
Pages (from-to)333-338
Number of pages6
JournalNature Nanotechnology
Volume10
Issue number4
DOIs
Publication statusPublished - 2015 Apr 9

ASJC Scopus subject areas

  • Bioengineering
  • Biomedical Engineering
  • Materials Science(all)
  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Qiu, X., Narayanapillai, K., Wu, Y., Deorani, P., Yang, D. H., Noh, W. S., Park, J. H., Lee, K. J., Lee, H. W., & Yang, H. (2015). Spin-orbit-torque engineering via oxygen manipulation. Nature Nanotechnology, 10(4), 333-338. https://doi.org/10.1038/nnano.2015.18