In an ultrathin Co/Py bilayer, ultrafast demagnetization follows a weakly coupled combination of the two layers' dynamics, while nanosecond precession shows a single coupled mode, and demagnetization time scales directly with damping.
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Dynamic interfacial effects in ultrathin ferromagnetic bilayers
In an ultrathin Co/Py bilayer, ultrafast demagnetization follows a weakly coupled combination of the two layers' dynamics, while nanosecond precession shows a single coupled mode, and demagnetization time scales directly with damping.