Current-Nonlinear Hall Effect and Spin-Orbit Torque Magnetization Switching in a Magnetic Topological Insulator
نویسندگان
چکیده
منابع مشابه
Current-induced switching of perpendicularly magnetized magnetic layers using spin torque from the spin Hall effect.
We show that in a perpendicularly magnetized Pt/Co bilayer the spin-Hall effect (SHE) in Pt can produce a spin torque strong enough to efficiently rotate and switch the Co magnetization. We calculate the phase diagram of switching driven by this torque, finding quantitative agreement with experiments. When optimized, the SHE torque can enable memory and logic devices with similar critical curre...
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As an in-plane charge current flows in a heavy metal film with spin-orbit coupling, it produces a torque on and thereby switches the magnetization in a neighbouring ferromagnetic metal film. Such spin-orbit torque (SOT)-induced switching has been studied extensively in recent years and has shown higher efficiency than switching using conventional spin-transfer torque. Here we report the SOT-ass...
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The strongly spin-momentum coupled electronic states in topological insulators (TI) have been extensively pursued to realize efficient magnetic switching. However, previous studies show a large discrepancy of the charge-spin conversion efficiency. Moreover, current-induced magnetic switching with TI can only be observed at cryogenic temperatures. We report spin-orbit torque switching in a TI-fe...
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We show that the TE-TM splitting of planar cavities leads to a special type of spin-orbit coupling for polariton graphene, a honeycomb superstructure formed by pillar microcavities, transforming into an emergent field with Dresselhaus symmetry at the Dirac points of the Brillouin zone. This transformation can be evidenced by the Optical Spin Hall effect. Under an applied magnetic field, polarit...
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Seyed Armin Razavi, Di Wu, Guoqiang Yu, Yong-Chang Lau, Kin L. Wong, Weihua Zhu, Congli He, Zongzhi Zhang, J. M. D. Coey, Plamen Stamenov, Pedram Khalili Amiri, and Kang L. Wang Department of Electrical Engineering, University of California, Los Angeles, California 90095-1594, USA Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Eng...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2017
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.119.137204