Pair Creation Mediated Vortex Core Reversal Left The Arrows Represent

Pair Creation Mediated Vortex Core Reversal Left The Arrows Represent This study allows me to identify and then precisely tune the vortex based magnetic configurations, and notably to observe the influence of spin transfer on reversal mechanisms of the vortex. I vortex pair and finally of the remaining vortex core. this core has opposite polarization with respect to the initial vortex core, indicated by the yellow color on the underlying cutplan.

Pair Creation Mediated Vortex Core Reversal Left The Arrows Represent In conclusion, we present a detailed micromagnetic description of an ultrafast vortex core reversal mechanism. this reversal is mediated by the creation of a vortex–antivortex pair which is followed by an annihilation process. Micromagnetic simulations demonstrate that the vortex core reversal is mediated by a rapid sequence of vortex antivortex pair creation and annihilation subprocesses. specific combinations of field pulse strength and duration are required to obtain a controlled vortex core reversal. Here we demonstrate experimentally that the unidirectional vortex core reversal process also occurs when such azimuthal modes are excited. these results are confirmed by micromagnetic simulations, which clearly show the selection rules for this novel reversal mechanism. We demonstrate that the sense of gyration of the vortex structure can be reversed by applying short bursts of the sinusoidal excitation field with amplitude of about 1.5 mt. this reversal.

Pair Creation Mediated Vortex Core Reversal In A Py Disk Of 100 Nm Here we demonstrate experimentally that the unidirectional vortex core reversal process also occurs when such azimuthal modes are excited. these results are confirmed by micromagnetic simulations, which clearly show the selection rules for this novel reversal mechanism. We demonstrate that the sense of gyration of the vortex structure can be reversed by applying short bursts of the sinusoidal excitation field with amplitude of about 1.5 mt. this reversal. We found that the core reversal occurs through a sequence consisting of a vortex antivortex pair creation, followed by an annihilation process, re sulting in a final magnetic structure of a single vortex with opposite polarization. We report an additional reversal mechanism of magnetic vortex cores in nanodot elements driven by currents flowing perpendicular to the sample plane, occurring via dynamic transformations between two coupled edge solitons and bulk vortex solitons. Found is the dynamic process of vav pair creation followed immediately by the annihilation of the newly created antivortex and the original vortex inside the nanoelements. such core reversals are always accompanied by an exchange energy explosion and subsequent spin wave emissions phenomena. We report an additional reversal mechanism of magnetic vortex cores in nanodot elements driven by currents flowing perpendicular to the sample plane, occurring via dynamic transformations.

Phase Diagram Of Spin Wave Mediated Vortex Core Reversal Switching We found that the core reversal occurs through a sequence consisting of a vortex antivortex pair creation, followed by an annihilation process, re sulting in a final magnetic structure of a single vortex with opposite polarization. We report an additional reversal mechanism of magnetic vortex cores in nanodot elements driven by currents flowing perpendicular to the sample plane, occurring via dynamic transformations between two coupled edge solitons and bulk vortex solitons. Found is the dynamic process of vav pair creation followed immediately by the annihilation of the newly created antivortex and the original vortex inside the nanoelements. such core reversals are always accompanied by an exchange energy explosion and subsequent spin wave emissions phenomena. We report an additional reversal mechanism of magnetic vortex cores in nanodot elements driven by currents flowing perpendicular to the sample plane, occurring via dynamic transformations.