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arXiv · 1704.06418

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

Martin M. Decker·Martin S. Wörnle·Matthias Kronseder·Alois Meisinger·M. Vogel·Helmut S. Körner·Guoyi Shi·Cheng Song·Christian H. Back
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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.

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Martin M. Decker, Martin S. Wörnle, Matthias Kronseder, Alois Meisinger, M. Vogel, Helmut S. Körner, Guoyi Shi, Cheng Song, Christian H. Back. 2017-04-21. Time resolved measurements of the switching trajectory of Pt/Co elements induced by spin-orbit torques. https://doi.org/10.1103/physrevlett.118.257201

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