Spin Hall torque magnetometry of Dzyaloshinskii domain walls

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

Research output: Contribution to journalArticle

136 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

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Domain walls
Induced currents
Heavy Metals
Heavy metals
magnetic measurement
domain wall
torque
Torque
heavy metals
Magnetoelectronics
Magnetism
Magnetization
interactions
emerging
magnetization
Magnetometry

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Spin Hall torque magnetometry of Dzyaloshinskii domain walls. / Emori, Satoru; Martinez, Eduardo; Lee, Kyoung Jin; Lee, Hyun Woo; Bauer, Uwe; Ahn, Sung Min; Agrawal, Parnika; Bono, David C.; Beach, Geoffrey S D.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 90, No. 18, 184427, 25.11.2014.

Research output: Contribution to journalArticle

Emori, S, Martinez, E, Lee, KJ, Lee, HW, Bauer, U, Ahn, SM, Agrawal, P, Bono, DC & Beach, GSD 2014, 'Spin Hall torque magnetometry of Dzyaloshinskii domain walls', Physical Review B - Condensed Matter and Materials Physics, vol. 90, no. 18, 184427. https://doi.org/10.1103/PhysRevB.90.184427
Emori, Satoru ; Martinez, Eduardo ; Lee, Kyoung Jin ; Lee, Hyun Woo ; Bauer, Uwe ; Ahn, Sung Min ; Agrawal, Parnika ; Bono, David C. ; Beach, Geoffrey S D. / Spin Hall torque magnetometry of Dzyaloshinskii domain walls. In: Physical Review B - Condensed Matter and Materials Physics. 2014 ; Vol. 90, No. 18.
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AU - Ahn, Sung Min

AU - Agrawal, Parnika

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