Abstract
We developed equations to estimate the spin Hall angle and anisotropy field of ferromagnets in heavy metal/ferromagnet heterostructures using a macrospin model. In this model, critical switching spin current density linearly changes with the applied in-plane magnetic field. Thus the spin Hall angles can be estimated by measuring the critical switching current density under in-plane magnetic field. The obtained spin Hall angle using this method is not only consistent with that obtained by harmonic measurements. Spin Hall angles of PtMn, β-W, Pt and (Bi0.5Sb0.5)2Te3 estimated by our method are also closed to that obtained using other different methods. Therefore, estimating spin Hall angle by macrospin model can be considered a simple, feasible and widely-applicable approach to obtain the spin Hall angle.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.