Time resolved measurements of the switching trajectory of Pt/Co elements induced by spin-orbit torques

Abstract

We report the experimental observation of spin-orbit torque induced switching of perpendicularly magnetized Pt/Co elements in a time resolved stroboscopic experiment based on high resolution Kerr microscopy. Magnetization dynamics is induced by injecting sub-nanosecond current pulses into the bilayer while simultaneously applying static in-plane magnetic bias fields. Highly reproducible homogeneous switching on time scales of several tens of nanoseconds is observed. Our findings can be corroborated using micromagnetic modelling only when including a field-like torque term as well as the Dzyaloshinskii-Moriya interaction mediated by finite temperature.

arXiv comment11 pages, 10 figures

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Cited by in corpus (14)

• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
• Single-shot dynamics of spin-orbit torque and spin transfer torque switching in three-terminal magnetic tunnel junctions
• Ultra-fast perpendicular Spin Orbit Torque MRAM
• Picosecond Spin Orbit Torque Switching
• Spin-orbit torque switching of magnetic tunnel junctions for memory application
• Field-free switching of magnetic tunnel junctions driven by spin-orbit torques at sub-ns timescales
• Interplay of voltage control of magnetic anisotropy, spin transfer torque, and heat in the spin-orbit torque switching in three-terminal magnetic tunnel junctions
• Real-time Hall-effect detection of current-induced magnetization dynamics in ferrimagnets
• Field-free spin-orbit torque switching in Co/Pt/Co multilayer with mixed magnetic anisotropies
• A platform for time-resolved scanning Kerr microscopy in the near-field
• Energy-efficient picosecond spin-orbit torque magnetization switching in ferro- and ferrimagnetic films
• Intrinsic back-switching phenomenon in SOT-MRAM devices
• Nanosecond Reversal of Three-Terminal Spin Hall Effect Memories Sustained at Cryogenic Temperatures
• Oscillatory spin-orbit torque switching induced by field-like torques