DOI: 10.1063/1.4926926. Investigating and engineering spin-orbit torques in heavy metal/Co2FeAl0.5Si0.5/MgO thin film structures

Investigating and engineering spin-orbit torques in heavy metal/Co2FeAl0.5Si0.5/MgO thin film structures

10.1063/1.4926926

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Current-induced spin-orbit torques (SOTs) have the potential to revolutionize magnetization switching technology. Here, we investigate SOT in a heavy metal (HM)/Co2FeAl0.5Si0.5 (CFAS)/MgO thin film structure with perpendicular magnetic anisotropy (PMA), where the HM is either Pt or Ta. Our results suggest that both the spin Hall effect and the Rashba effect contribute significantly to the effective fields in the Pt underlayer samples. Moreover, after taking the PMA energies into account, current-induced SOT-based switching studies of both the Pt and Ta underlayer samples suggest that the two HM underlayers yield comparable switching efficiency in the HM/CFAS/MgO material system.

Bibliography

Loong, L. M., Deorani, P., Qiu, X., & Yang, H. (2015). Investigating and engineering spin-orbit torques in heavy metal/Co2FeAl0.5Si0.5/MgO thin film structures. Applied Physics Letters, 107(2).

Authors 4

Li Ming Loong (first)
Praveen Deorani (additional)
Xuepeng Qiu (additional)
Hyunsoo Yang (additional)

References 31 Referenced 25

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Dates

Type	When
Created	10 years, 1 month ago (July 16, 2015, 9:41 a.m.)
Deposited	2 years, 2 months ago (June 17, 2023, 4:13 p.m.)
Indexed	1 week, 3 days ago (Aug. 23, 2025, 9:52 p.m.)
Issued	10 years, 1 month ago (July 13, 2015)
Published	10 years, 1 month ago (July 13, 2015)
Published Online	10 years, 1 month ago (July 15, 2015)
Published Print	10 years, 1 month ago (July 13, 2015)

Funders 1

National Research Foundation-Prime Minister's office, Republic of Singapore 10.13039/501100001381 National Research Foundation Singapore
Region: Asia
gov (National government)
Labels8
1. National Research Foundation-Prime Minister's office, Republic of Singapore
2. Singapore National Research Foundation
3. National Research Foundation of Singapore
4. National Research Foundation, Singapore
5. National Research Foundation, Singapore (NRF)
6. nrfsg
7. NRF Singapore
8. NRF
Awards1
1. NRF CRP12-2013-01

BibTeX

@article{Loong_2015, title={Investigating and engineering spin-orbit torques in heavy metal/Co2FeAl0.5Si0.5/MgO thin film structures}, volume={107}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.4926926}, DOI={10.1063/1.4926926}, number={2}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Loong, Li Ming and Deorani, Praveen and Qiu, Xuepeng and Yang, Hyunsoo}, year={2015}, month=jul }

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