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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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Strong radiation of spin waves by core reversal of a magnetic vortex and their wave behaviors in magnetic nanowire waveguides

Cited 99 times inthomson ciCited 77 times inthomson ci
Title
Strong radiation of spin waves by core reversal of a magnetic vortex and their wave behaviors in magnetic nanowire waveguides
Author
Choi, SangkookLee, Ki-SukGuslienko, Konstantin Yu.Kim, Sang-Koog
Keywords
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Issue Date
2007-02
Publisher
AMERICAN PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.98, no.8, pp.1 - 4
Abstract
We conducted micromagnetic numerical studies on the strong radiation of spin waves (SWs) produced by the magnetic-field-induced reversal of a magnetic vortex core, as well as their wave behaviors in magnetic nanowires. It was found that the radial SWs can be emitted intensively from a vortex core in a circular dot by virtue of localized large torques employed at the core, and then can be injected into a long nanowire via their contact. These SWs exhibit wave characteristics such as propagation, reflection, transmission, interference, and dispersion. These results offer a preview of the generation, delivery, and manipulation of SWs in magnetic elements, which are applicable to information-signal processing in potential SW devices.
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DOI
10.1103/PhysRevLett.98.087205
ISSN
0031-9007
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MSE_Journal Papers
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