Abstract
We investigate the Hall resistance of metallic multilayers Ta/Cr/CoTb/Ta/Si. In addition to the anomalous Hall effect originating from the ferrimagnetic CoTb layer, the unconventional Hall effect (UHE) is observed in our multilayer samples. The UHE depends not only on the current and magnetic fields but also on the device geometry and temperature in a unique way. Our results suggest that the UHE does not originate from the spin–orbit torque driven magnetization tilting but occurs possibly due to thermionic emission and Lorentz force at the metal/Si interface, where the Schottky barrier is formed. We also find that the space-charge effect causes geometric dependence of the Hall resistance. The magnitude of UHE is sizable and linearly proportional to the longitudinal magnetic field, suggesting that the observed UHE is attractive to the magnetic-field sensing industry.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
