Spin-orbit torque-driven magnetization switching and thermal effects studied in Ta\CoFeB\MgO nanowires

Abstract

We demonstrate magnetization switching in out-of-plane magnetized Ta\CoFeB\MgO nanowires by current pulse injection along the nanowires, both with and without a constant and uniform magnetic field collinear to the current direction. We deduce that an effective torque arising from spin-orbit effects in the multilayer drives the switching mechanism. While the generation of a component of the magnetization along the current direction is crucial for the switching to occur, we observe that even without a longitudinal field thermally generated magnetization fluctuations can lead to switching. Analysis using a generalized Néel-Brown model enables key parameters of the thermally induced spin-orbit torques switching process to be estimated, such as the attempt frequency and the effective energy barrier.

8 pages, 3 figures

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Cited by in corpus (18)

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• Thickness Dependence of Spin-Orbit Torques in Ferrimagnetic GdFeCo Alloys
• Interfacial Dzyaloshinskii-Moriya interaction in Ta\Co20Fe60B20\MgO nanowires
• Spin orbit torques and Dzyaloshinskii-Moriya interaction in dual-interfaced Co-Ni multilayers
• Electric-field control of spin-orbit torques in perpendicularly magnetized W/CoFeB/MgO films
• Spin-orbit torque-driven magnetization switching and thermal effects studied in Ta\CoFeB\MgO nanowires
• Effect of annealing on the interfacial Dzyaloshinskii-Moriya interaction in Ta/CoFeB/MgO trilayers
• Current-induced nucleation and dynamics of skyrmions in a Co-based Heusler alloy
• Dimensional crossover in spin Hall oscillators
• Deterministic and stochastic aspects of current-induced magnetization reversal in perpendicular nanomagnets
• Inplane spin orbit torque magnetization switching and its detection using the spin rectification effect at sub-GHz frequencies
• Quasistatic and Pulsed Current-Induced Switching with Spin-Orbit Torques in Ultrathin Films with Perpendicular Magnetic Anisotropy
• Ultra-low switching current density in all-amorphous W-Hf / CoFeB / TaOx films
• Newton's second law in spin-orbit torque
• Electrical control of metallic heavy-metal/ferromagnet interfacial states
• Dragging of magnetic domain walls by interlayer exchange
• Thermal Spin-Orbit Torque in Spintronics