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Field derivative of the absorption, , of the FMR spectra for the SL for different temperatures. is parallel to the sample’s surface and is perpendicular to it. The spectra have been vertically shifted for comparison. The criteria to determine and are shown in the curve.
Temperature dependence of the resonant magnetic field , and peak-to-peak width for the perpendicular geometry, schematized in the upper panel. The inset in the lower panel shows the complete dependence, (solid circles), and , (open circles). The solid lines are guide for the eye. Lower and upper panels shows zoom outs of the low dependence. The solid lines are also guide for the eyes as in the inset. The dashed line indicates the superconducting critical temperature, .
Resonant magnetic field (upper panel) and peak-to-peak value (lower panel) as a function of temperature for the parallel geometry (solid lines are guide for the eyes). The dashed line indicates the superconducting critical temperature, , of the sample. The scheme in the upper panel shows the FMR field geometry. Arrows indicates the and directions. The scheme in lower panel shows the flux compression in the Co layers.
Field derivative of the absorption, , corresponding to the FMR spectra of the superlattice for different temperatures. The and are parallel to the sample’s surface. Spectra have been vertically shifted for comparison.
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