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Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
Published on: November 7, 2017
Dynamic exchange coupling in magnetic bilayers
Bret Heinrich1, Yaroslav Tserkovnyak, Georg Woltersdorf
1Department of Physics, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada.
Abstract:
A long-range dynamic interaction between ferromagnetic films separated by normal-metal spacers is reported, which is communicated by nonequilibrium spin currents. It is measured by ferromagnetic resonance and explained by an adiabatic spin-pump theory. In such a resonance the spin-pump mechanism of spatially separated magnetic moments leads to an appreciable increase in the resonant linewidth when the resonance fields are well apart, and results in a dramatic linewidth narrowing when the resonant fields approach each other.
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