Strong Radiation of Spin Waves by Core Reversal of a Magnetic Vortex and Their Wave Behaviors in Magnetic Nanowire Waveguides | Zendy

Sangkook Choi | Zendy; KiSuk Lee | Zendy; K. Y. Guslienko | Zendy; SangKoog Kim | Zendy

Open Access

Strong Radiation of Spin Waves by Core Reversal of a Magnetic Vortex and Their Wave Behaviors in Magnetic Nanowire Waveguides

Author(s) -

Sangkook Choi,

KiSuk Lee,

K. Y. Guslienko,

SangKoog Kim

Publication year - 2007

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.98.087205

Subject(s) - vortex , nanowire , spin wave , condensed matter physics , physics , core (optical fiber) , magnetic field , dispersion (optics) , optics , optoelectronics , mechanics , ferromagnetism , quantum mechanics

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.open997

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