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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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Physical Origin and Generic Control of Magnonic Band Gaps of Dipole-Exchange Spin Waves in Width-Modulated Nanostrip Waveguides

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Title
Physical Origin and Generic Control of Magnonic Band Gaps of Dipole-Exchange Spin Waves in Width-Modulated Nanostrip Waveguides
Author
Lee, Ki-SukHan, Dong-SooKim, Sang-Koog
Keywords
Analytical calculations; Band gaps; Crucial parameters; Crystal waveguides; Dipole-exchange spin waves; Forbidden bands; Generic controls; Gigahertz frequencies; Micromagnetic; Nanostrips; Periodic modulations; Planar structures; Potential applications; Thin-film; Wide band gaps
Issue Date
2009-03
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.102, no.12, pp.1 - 4
Abstract
We report, for the first time, on a novel planar structure of magnonic-crystal waveguides, made of a single magnetic material, in which the allowed and forbidden bands of propagating dipole-exchange spin waves can be manipulated by the periodic modulation of different widths in thin-film nanostrips. The origin of the presence of several magnonic wide band gaps and the crucial parameters for controlling those band gaps of the order of ∼10GHz are found by micromagnetic numerical and analytical calculations. This work can offer a route to the potential application to broadband spin wave filters in the gigahertz frequency range.
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DOI
10.1103/PhysRevLett.102.127202
ISSN
0031-9007
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MSE_Journal Papers
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