Figure 5
From: The switching of strong spin wave beams in patterned garnet films
Modeling of spin wave interaction with the antidots line. (a) The demagnetizing field in the YIG film (4.5 μm thickness) near the square antidots row (of 50 μm size and 50 μm separation). The colormap shows the demagnetizing field component along the direction of the H oriented at the angle 45° with respect to the antidots line. (b) Iso-frequency dispersion relation lines at 4.7 GHz in the homogeneous YIG film for internal magnetic field magnitudes equal 950, 966 and 980 Oe with the thin blue solid lines, dash-dotted green and thick white solid, respectively. The direction of antidots line is marked as e ∥. The wave vector of the incident and refracted SW is marked with k in and k out, respectively, their component tangential to the line of andidots is k ||. The group velocity direction of the refracted SWs is marked with v g,out. In the background by color-map is presented dispersion relation obtained using MS for the field magnitude equal 980 Oe. Perfect matching between simulations results and analytical contour is visible.
