Ferromagnetic layer thickness dependence of the Dzyaloshinskii-Moriya interaction and spin-orbit torques in Pt\Co\AlOx
- Title
- Ferromagnetic layer thickness dependence of the Dzyaloshinskii-Moriya interaction and spin-orbit torques in Pt\Co\AlOx
- Author(s)
- Lo Conte, R. ; Karnad, G. V. ; Martinez, E. ; Lee, K. ; Kim, N. -H. ; Han, D. -S. ; Kim, J. -S. ; Prenzel, S. ; Schulz, T. ; You, C. -Y. ; Swagten, H. J. M. ; Klaeui, M.
- Issued Date
- 2017-06
- Citation
- AIP Advances, v.7, no.6
- Type
- Article
- Keywords
- Current Induced Domains ; Domain Walls ; Dynamics ; Dzyaloshinskii Moriya Interaction ; Ferromagnetic Layer Thickness ; Ferromagnetic Materials ; Ferromagnetism ; Filmsdomain Walls ; Magnetization ; Motion Study ; Platinum ; Second Harmonics ; Spin Diffusion Length ; Spin Hall Effect ; Symmetry ; Systems ; Thickness Dependence ; Varying Thickness ; Weak Ferromagnetism
- ISSN
- 2158-3226
- Abstract
- We report the thickness dependence of the Dzyaloshinskii-Moriya interaction (DMI) and spin-orbit torques (SOTs) in Pt\Co(t)\AlOx, studied by current-induced domain wall (DW) motion and second-harmonic experiments. From the DW motion study, a monotonous decay of the effective DMI strength with increasing Co thickness is observed, in agreement with a DMI originating from the Pt\Co interface. The study of the ferromagnetic layer thickness dependence of spin-orbit torques reveals a more complex behavior. The observed thickness dependence suggests the spin-Hall effect in Pt as the main origin of the SOTs, with the measured SOT-fields amplitudes resulting from the interplay between the varying thickness and the transverse spin diffusion length in the Co layer. © 2017 Author(s).
- Publisher
- American Institute of Physics Inc.
- Related Researcher
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Kim, June-Seo 나노기술연구부
- Research Interests
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- Files in This Item:
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