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Optical micrograph of the sample.
(a) Two-dimensional maps of the spin-wave intensity and the phase recorded at the excitation frequency of 7 GHz. The lateral dimensions of the maps are . The intensity map is compensated for decay. (b) Phase profiles recorded by scanning along the axis of the waveguide for three different values of the control current applied through the Cu line. Symbols: experimental data, solid curves: best fits with a sinusoidal oscillation. The value corresponds to the middle of the antenna. Curves are offset for clarity by the amounts shown with horizontal dashed lines.
(a) Dependences of the wavelength and the wavenumber of the spin waves on the value of the control current. (b) Dependence of the relative phase shift on the propagation coordinate for the maximum values of the current used in the experiment.
Measured (symbols) and calculated (curves) dispersion characteristics of the spin waves, at (squares), (circles), and (diamonds). The static uniform magnetic field is . is the additional field produced by the control current .
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