Highly efficient spin-current generation from Pt/Ru multilayers

Autor:	Jijun Yun, Meixia Chang, Yalu Zuo, Yongbo Zhai, Qiaoning Bai, Jianrong Zhang, Li Xi
Rok vydání:	2021
Předmět:	Magnetization Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Spintronics Field (physics) Scattering Electrical resistivity and conductivity Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Current density Magnetic field Spin-½
Zdroj:	Applied Physics Letters. 119:212404
ISSN:	1077-3118 0003-6951
Popis:	Increasing spin Hall angle of heavy metals has attracted considerable attention due to their potential applications in spintronic technology. Here, we demonstrate that the spin Hall angle could be enhanced dramatically in the Ta/[Pt/Ru]n/Pt/Co/Ta multilayers. The spin Hall angle reaches a maximum value of 0.28 when n = 5 from the loop-shift method with a relative low resistivity of approximately 48 μΩ cm. Meanwhile a minimum critical switching current density approximately 3.2 × 106 A/cm2 under an in-plane bias magnetic field around 5% of the perpendicular anisotropy field was obtained for the sample with n = 5 in current-induced magnetization switching experiment. We find that the extrinsic spin Hall mechanism changes from the spin skew scattering when n 2. This work provides an effective way in increasing spin Hall angle for low-power consumption spintronics devices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2c5cdde26804d6a7d68d7b24cf20cd95 https://doi.org/10.1063/5.0069820 Zobrazit plný text záznamu