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Luo, Feilong; Goolaup, Sarjoosing; Law, Wai Cheung; Li, Sihua; Tan, Funan; Engel, Christian; Zhou, Tiejun and Lew, Wen Siang
(2017).
DOI: https://doi.org/10.1103/PhysRevB.95.174415
Abstract
The strength of spin-orbit torque in ferromagnetic structures is characterized by fieldlike and dampinglike effective fields. Conventionally, two distinct measurement approaches are employed to quantify the magnitude of the respective effective fields in structures with in-plane magnetic anisotropy. Here, we propose and demonstrate a self-validating method, which enables simultaneous quantification of both the fieldlike and dampinglike terms in structures with in-plane magnetic anisotropy. An analytical expression is derived and validated by harmonic Hall resistance measurement. Both the fieldlike and dampinglike effective fields are extracted from a single measurement using the derived fitting functions for the second harmonic Hall resistance. The first harmonic Hall resistance acts as a reference to confirm that the experimental parameters are consistent with the derived equations.
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About
- Item ORO ID
- 59847
- Item Type
- Journal Item
- ISSN
- 1098-0121
- Project Funding Details
-
Funded Project Name Project ID Funding Body Competitive Research Programme (Non-volatile Magnetic Logic and Memory Integrated Circuit Devices) NRF-CRP9-2011- 01 Singapore National Research Foundation, Prime Minister’s Office Industry-IHL Partnership Program NRF2015- IIP001-001 Not Set MOE-AcRF Tier 2 Grant MOE 2013-T2-2-017 Not Set - Academic Unit or School
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Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Copyright Holders
- © 2017 American Physical Society
- Depositing User
- Vikram Goolaup