Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/160133
Title: | Strain-mediated spin-orbit torque enhancement in Pt/Co on flexible substrate | Authors: | Wong, Grayson Dao Hwee Xu, Zhan Gan, Weiliang Ang, Calvin Ching Ian Law, Wai Cheung Tang, Jiaxuan Zhang, Wen Wong, Ping Kwan Johnny Yu, Xiaojiang Xu, Feng Wee, Andrew T. S. Seet, Chim Seng Lew, Wen Siang |
Keywords: | Science::Physics | Issue Date: | 2021 | Source: | Wong, G. D. H., Xu, Z., Gan, W., Ang, C. C. I., Law, W. C., Tang, J., Zhang, W., Wong, P. K. J., Yu, X., Xu, F., Wee, A. T. S., Seet, C. S. & Lew, W. S. (2021). Strain-mediated spin-orbit torque enhancement in Pt/Co on flexible substrate. ACS Nano, 15(5), 8319-8327. https://dx.doi.org/10.1021/acsnano.0c09404 | Project: | NRF2015-IIP001-001 RCA − 17/284 I1801E0030 |
Journal: | ACS Nano | Abstract: | Current-induced magnetization switching by spin-orbit torque generated in heavy metals offers an enticing realm for energy-efficient memory and logic devices. The spin Hall efficiency is a key parameter in describing the generation of spin current. Recent findings have reported enhancement of spin Hall efficiency by mechanical strain, but its origin remains elusive. Here, we demonstrate a 45% increase in spin Hall efficiency in the platinum/cobalt (Pt/Co) bilayer, of which 78% of the enhancement was preserved even after the strain was removed. Spin transparency and X-ray magnetic circular dichroism revealed that the enhancement was attributed to a bulk effect in the Pt layer. This was further confirmed by the linear relationship between the spin Hall efficiency and resistivity, which indicates an increase in skew-scattering. These findings shed light on the origin of enhancement and are promising in shaping future utilization of mechanical strain for energy-efficient devices. | URI: | https://hdl.handle.net/10356/160133 | ISSN: | 1936-0851 | DOI: | 10.1021/acsnano.0c09404 | Schools: | School of Physical and Mathematical Sciences | Rights: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © 2021 American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsnano.0c09404. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | SPMS Journal Articles |
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Grayson_ACS Nano Manuscript_May 2021.pdf | 936.74 kB | Adobe PDF | ![]() View/Open |
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