Spin Hall torque magnetometry of Dzyaloshinskii domain walls

Satoru Emori, Eduardo Martinez, Kyung Jin Lee, Hyun Woo Lee, Uwe Bauer, Sung Min Ahn, Parnika Agrawal, David C. Bono, Geoffrey S.D. Beach

Research output: Contribution to journalArticle

154 Citations (Scopus)

Abstract

Current-induced domain wall motion in the presence of the Dzyaloshinskii-Moriya interaction (DMI) is experimentally and theoretically investigated in heavy-metal/ferromagnet bilayers. The angular dependence of the current-induced torque and the magnetization structure of Dzyaloshinskii domain walls are described and quantified simultaneously in the presence of in-plane fields. We show that the DMI strength depends strongly on the heavy metal, varying by a factor of 20 between Ta and Pa, and that strong DMI leads to wall distortions not seen in conventional materials. These findings provide essential insights for understanding and exploiting chiral magnetism for emerging spintronics applications.

Original languageEnglish
Article number184427
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume90
Issue number18
DOIs
Publication statusPublished - 2014 Nov 25

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Spin Hall torque magnetometry of Dzyaloshinskii domain walls'. Together they form a unique fingerprint.

  • Cite this

    Emori, S., Martinez, E., Lee, K. J., Lee, H. W., Bauer, U., Ahn, S. M., Agrawal, P., Bono, D. C., & Beach, G. S. D. (2014). Spin Hall torque magnetometry of Dzyaloshinskii domain walls. Physical Review B - Condensed Matter and Materials Physics, 90(18), [184427]. https://doi.org/10.1103/PhysRevB.90.184427