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Lee, Ki-Suk
Creative Lab. for Advanced Spin Systems (CLASS)
Research Interests
  • Magnetism, spintronics, spin dynamics, rare-earth free magnet

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Edge-Soliton-Mediated Vortex-Core Reversal Dynamics

Cited 6 times inthomson ciCited 2 times inthomson ci
Title
Edge-Soliton-Mediated Vortex-Core Reversal Dynamics
Author
Lee, Ki-SukYoo, Myoung-WooChoi, Youn-SeokKim, Sang-Koog
Keywords
Creation and annihilation; Currents flowing; Dynamic transformation; Magnetic vortex cores; Nanodots; Nanoelements; Out-of-plane; Reversal mechanism; Switching process; Topological soliton; Vortex solitons; Vortex-antivortex pairs
Issue Date
2011-04
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.106, no.14, pp.1 - 4
Abstract
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. This mechanism differs completely from the well-known switching process mediated by the creation and annihilation of vortex-antivortex pairs in terms of the associated topological solitons, energies, and spin-wave emissions. Strongly localized out-of-plane gyrotropic fields induced by the fast motion of the coupled edge solitons enable a magnetization dip that plays a crucial role in the formation of the reversed core magnetization. This work provides a deeper physical insight into the dynamic transformations of magnetic topological solitons in nanoelements.
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DOI
10.1103/PhysRevLett.106.147201
ISSN
0031-9007
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MSE_Journal Papers
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