Academic Journal
Investigation of spin-orbit torque performance with W/Cu-multilayers as spin current source
| العنوان: | Investigation of spin-orbit torque performance with W/Cu-multilayers as spin current source |
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| المؤلفون: | Coester, Birte, Lim, Gerard Joseph, Tan, Funan, Poh, Hanyin, Lew, Wen Siang |
| المساهمون: | School of Physical and Mathematical Sciences |
| سنة النشر: | 2023 |
| المجموعة: | DR-NTU (Digital Repository at Nanyang Technological University, Singapore) |
| مصطلحات موضوعية: | Science::Physics, Spin Orbits, Resonance Technique |
| الوصف: | We study the W/Cu multilayers as a spin current source and the coherent spin-orbit torques in a Fe layer using the spin-torque ferromagnetic resonance (STFMR) technique. With increasing numbers of layers, the line shape of the STFMR signals changes from predominantly antisymmetric to predominantly symmetric. When using [W(0.5)/Cu(0.5)]5 as a spin current source, the symmetric amplitude increases by a factor of 5 compared to a single W layer. Simultaneously, the effective damping parameter also increases slightly due to enhanced spin pumping. Along with an increasing trend in the damping-like torque efficiency, this suggests that the extrinsic spin Hall effect is enhanced. Concurrently, the antisymmetric amplitude decreases significantly by a factor of 27, which indicates an increase in the field-like torque when multilayers are used as a spin current source. ; Agency for Science, Technology and Research (A*STAR) ; Published version ; This work was supported by the RIE2020 ASTAR AME IAF-ICP grant via Grant No. I1801E0030. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0021-8979 |
| Relation: | I1801E0030; Journal of Applied Physics; Coester, B., Lim, G. J., Tan, F., Poh, H. & Lew, W. S. (2023). Investigation of spin-orbit torque performance with W/Cu-multilayers as spin current source. Journal of Applied Physics, 133(22), 223904-1-223904-11. https://dx.doi.org/10.1063/5.0139212; https://hdl.handle.net/10356/169154; 2-s2.0-85161920282; 22; 133; 223904-1; 223904-11 |
| DOI: | 10.1063/5.0139212 |
| الاتاحة: | https://hdl.handle.net/10356/169154 https://doi.org/10.1063/5.0139212 |
| Rights: | © 2023 Author(s). Published under an exclusive license by AIP Publishing. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the author(s) and AIP Publishing. This article appeared in Coester, B., Lim, G. J., Tan, F., Poh, H. & Lew, W. S. (2023). Investigation of spin-orbit torque performance with W/Cu-multilayers as spin current source. Journal of Applied Physics, 133(22), 223904-1 - 223904-11 and may be found at https://doi.org/10.1063/5.0139212 |
| رقم الانضمام: | edsbas.59CE02C4 |
| قاعدة البيانات: | BASE |
| تدمد: | 00218979 |
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| DOI: | 10.1063/5.0139212 |