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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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Out-of-plane current controlled switching of the fourfold degenerate state of a magnetic vortex in soft magnetic nanodots

Cited 16 times inthomson ciCited 13 times inthomson ci
Title
Out-of-plane current controlled switching of the fourfold degenerate state of a magnetic vortex in soft magnetic nanodots
Author
Choi, Youn-SeokYoo, Myoung-WooLee, Ki-SukYu, Young-SangJung, HyunsungKim, Sang-Koog
Keywords
Controlled switching; Degenerate state; Magnetic dots; Magnetic vortices; Micromagnetics; Numerical calculation; Out-of-plane; Pulse currents; Single-step; Soft magnetics; Step pulse; Vortex state
Issue Date
2010-02
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.96, no.7, pp.1 - 3
Abstract
We report on an observation of transitions of the fourfold degenerate state of a magnetic vortex in soft magnetic nanodots by micromagnetic numerical calculations. The quaternary vortex states in patterned magnetic dots were found to be controllable by changing the density of out-of-plane dc or pulse currents applied to the dots. Each vortex state can be switched to any of the other states by applying different sequence combinations of individual single-step pulse currents. Each step pulse has a characteristic threshold current density and direction. This work offers a promising way for manipulating both the polarization and chirality of magnetic vortices.
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DOI
10.1063/1.3310017
ISSN
0003-6951
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MSE_Journal Papers
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