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Spin-Torque Excitation of Perpendicular Standing Spin Waves in Coupled <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>YIG</mml:mi><mml:mo>/</mml:mo><mml:mi>Co</mml:mi></mml:mrow></mml:math> Heterostructures
We investigate yttrium iron garnet (YIG)/cobalt (Co) heterostructures using broadband ferromagnetic resonance (FMR). We observe an efficient excitation of perpendicular standing spin waves (PSSWs) in the YIG layer when the resonance frequencies of the YIG PSSWs and the Co FMR line coincide. Avoided crossings of YIG PSSWs and the Co …