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Reciprocal Damon-Eshbach-type spin wave excitation in a magnonic crystal due to tunable magnetic symmetry
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10.1063/1.4773522
/content/aip/journal/apl/102/1/10.1063/1.4773522
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/1/10.1063/1.4773522
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Sketch of emitter (CPW 1) and detector (CPW 2) CPWs on top of a nanowire array subject to a magnetic field H. k illustrates the transferred wave vector. Every second wire is connected to a RP. The z direction points out of the plane. (b) Scanning electron microscopy image of 255 nm wide wires with an edge-to-edge separation of 45 nm. The bright areas are the ground lines of CPW 1 and CPW 2. (c) and (d) in the FMO state taken for decreasing H in a ML starting at after saturation at −100 mT. The FMO mode n = 0 calculated by PWM (line) is labeled. (e) and (f) in the AFO state taken for decreasing H starting at after saturation at −100 mT. The AFO modes n = 0a and n = 0b calculated by PWM (lines) are labeled. The dashed-dotted perpendicular lines separate three different magnetic states (from the right): AFO state, disordered state, and FMO state. The perpendicular lines (highlighted by an asterisk) in (d) and (f) indicate the position of spectra presented in Fig. 3 . The low frequency mode in (d) and (f) corresponds to the RP. Horizontal arrows indicate the sweep direction of H.

Image of FIG. 2.
FIG. 2.

(a) Propagation attenuation for counter-propagating SWs: (black) and (gray) (FMO with : upward triangle, FMO with : downward triangle, AFO: circle). (b) Non-reciprocity parameter . FMO with : upward triangle, FMO with : downward triangle, AFO: circle. indicates reciprocal excitation and is achieved in the AFO state. The field step is .

Image of FIG. 3.
FIG. 3.

(a) for the FMO state at . (b) for the AFO state at . The perpendicular dotted lines indicate between local extrema generated by phase shifts from propagating SWs.

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/content/aip/journal/apl/102/1/10.1063/1.4773522
2013-01-04
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Reciprocal Damon-Eshbach-type spin wave excitation in a magnonic crystal due to tunable magnetic symmetry
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/1/10.1063/1.4773522
10.1063/1.4773522
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