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Time- and space-resolved nonlinear magnetoacoustic dynamics
Physical review B
Nonlinear magnetization dynamics are of great interest, being, for instance, leveraged for neuromorphic computing in spin-transfer torque nano-oscillators. Here, we demonstrate how to implement magnetoacoustics to reach this regime, using monochromatic ( f saw = 450 MHz) surface acoustic waves traveling on a thin layer of (Ga,Mn)As. By careful tuning of the precession frequency to both f saw and 2 f saw using the magnetic field and temperature, we evidence clear signatures of a nonlineardoi:10.1103/physrevb.101.144425 fatcat:qa34tshjevhh7opurwtca6btee