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

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


Titill: Duplication, Collapse, and Escape of Magnetic Skyrmions Revealed Using a Systematic Saddle Point Search Method
Höfundur: Müller, Gideon Philipp   orcid.org/0000-0001-8684-9627
Bessarab, Pavel   orcid.org/0000-0003-3351-7172
Vlasov, Sergei M.
Lux, Fabian
Kiselev, Nikolai S.
Blügel, Stefan
Uzdin, Valery M.
Jónsson, Hannes   orcid.org/0000-0001-8285-5421
Útgáfa: 2018-11-06
Tungumál: Enska
Umfang: 197202
Háskóli/Stofnun: Háskóli Íslands
University of Iceland
Svið: Verkfræði- og náttúruvísindasvið (HÍ)
School of Engineering and Natural Sciences (UI)
Deild: Raunvísindastofnun (HÍ)
Science Institute (UI)
Raunvísindadeild (HÍ)
Faculty of Physical Sciences (UI)
Birtist í: Physical Review Letters;121(19)
ISSN: 0031-9007
1079-7114 (eISSN)
DOI: 10.1103/PhysRevLett.121.197202
Efnisorð: Methods in magnetism; Skyrmions; Noncollinear magnets; Condensed Matter & Materials Physics; Þéttefnisfræði; Segulmagn
URI: https://hdl.handle.net/20.500.11815/1006

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Tilvitnun:

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

Útdráttur:

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.

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© 2018 American Physical Society

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