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Bragg resonances of magnetostatic surface spin waves in a layered structure: Magnonic crystal-dielectric-metal
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10.1063/1.4730374
/content/aip/journal/apl/100/25/10.1063/1.4730374
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/25/10.1063/1.4730374
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Geometry of experiment. Inset I shows the cross section of etched groove, inset II shows the profile of the groove made by diamond cutter. In the presence of metal screen wavevectors of the MSSW, traveling along the YIG–dielectric spacer surface is less than corresponding to MSWW located at YIG-GGG interface. d and t are thicknesses of YIG film and dielectric spacer, respectively. Λ is the period of surface structure. z is the width of microstrip antenna. S, S1, and S2 are distances between antennas, between edge of metal screen, and input and output antennas, respectively. Insets I and II show profiles of etched groove and groove made by the diamond cutter, respectively.

Image of FIG. 2.
FIG. 2.

S 21(f) is the transmission response of MC without metal cladding (t= , curve 1), with metal cladding (t = 0, curve 2), and in MC-dielectric layer-metal cladding structure (t ≈ 100 μm, curve 3). f min and f max are minimal and maximum measured frequencies of MSSW spectra, respectively. f 1 and f 2 are frequencies of first and second Bragg resonance frequencies, respectively. δf 1 and δf 2 are widths of band gaps near first and second Bragg resonance frequencies, respectively.

Image of FIG. 3.
FIG. 3.

Calculated from measured phase frequency dependence MSSW dispersion curves of MC without metal cladding (t = , curve 1), with metal cladding (t = 0, curve 2) and in MC–dielectric layer-metal cladding structure (t ≈ 100 μm, curve 3). k 1, , and are MSSW wavenumbers at first Bragg resonance frequency f 1 in case of t = , t = 0, and t ≈ 100 μm, respectively. k 2 is MSSW wavenumber at second Bragg resonance frequency f 2 in case of t= . and are differences between the values of forward and reflected MSSW wavenumbers at first Bragg resonance frequency f 1 in case of t = 0 and t ≈ 100 μm, respectively. is the difference between the values of forward and reflected MSSW wavenumbers at second Bragg resonance frequency f 2 in case of t = 0. Insets show regions of anomalous dispersion near the Bragg resonance frequencies.

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/content/aip/journal/apl/100/25/10.1063/1.4730374
2012-06-21
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Bragg resonances of magnetostatic surface spin waves in a layered structure: Magnonic crystal-dielectric-metal
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/25/10.1063/1.4730374
10.1063/1.4730374
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