Duplication, Collapse, and Escape of Magnetic Skyrmions Revealed Using a Systematic Saddle Point Search Method

Gideon P. Müller, Pavel F. Bessarab, Sergei M. Vlasov, Fabian Lux, Nikolai S. Kiselev, Stefan Blügel, Valery M. Uzdin, Hannes Jónsson

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Abstract

Various transitions that a magnetic Skyrmion can undergo are found in calculations using a method for climbing up the energy surface and converging onto first order saddle points. In addition to collapse and escape through a boundary, the method identifies a transition where the Skyrmion divides and forms two Skyrmions. The activation energy for this duplication process can be similar to that of collapse and escape. A tilting of the external magnetic field for a certain time interval is found to induce the duplication process in a dynamical simulation. Such a process could turn out to be an important avenue for the creation of Skyrmions in future magnetic devices.

Original languageEnglish
Article number197202
Pages (from-to)1-6
JournalPhysical Review Letters
Volume121
Issue number19
DOIs
Publication statusPublished - 6 Nov 2018
MoE publication typeA1 Journal article-refereed

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    Müller, G. P., Bessarab, P. F., Vlasov, S. M., Lux, F., Kiselev, N. S., Blügel, S., Uzdin, V. M., & Jónsson, H. (2018). Duplication, Collapse, and Escape of Magnetic Skyrmions Revealed Using a Systematic Saddle Point Search Method. Physical Review Letters, 121(19), 1-6. [197202]. https://doi.org/10.1103/PhysRevLett.121.197202