Magnonic band gap design by the edge modulation of micro-sized waveguides

被引:40
作者
Ciubotaru, F. [1 ]
Chumak, A. V. [1 ]
Grigoryeva, N. Yu [2 ]
Serga, A. A. [1 ]
Hillebrands, B. [1 ]
机构
[1] Tech Univ Kaiserslautern, Fac Phys & Forschungszentrum OPTIMAS, D-67663 Kaiserslautern, Germany
[2] St Petersburg Elect Univ, Dept Phys Elect & Technol, St Petersburg 197376, Russia
关键词
Microwave filters - Waveguide filters - Degrees of freedom (mechanics) - Spin waves;
D O I
10.1088/0022-3727/45/25/255002
中图分类号
O59 [应用物理学];
学科分类号
摘要
The potential to control the number of the spin-wave band gaps of a magnonic crystal (MC) by variation of its geometry is investigated by numerical simulations. The MC is represented by a micro-sized planar ferromagnetic waveguide with periodically variable width. By choosing a step-like or sinusoidal variation of the width, the MC reveals multiple or single band gaps, respectively. This allows for additional degrees of freedom in the design of MC-based microwave filters and phase shifters with desired characteristics. The MCs' band gaps have been studied in the space and frequency domains exploring the spin-wave spectrum dependence on the probing position inside the MC.
引用
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页数:6
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