Spin Hall nano-oscillators convert DC to magnetic auto-oscillations in the microwave regime. Current research on these and similar devices is dedicated to creating next-generation energy-efficient hardware for communication technologies. Despite intensive research on magnetic auto-oscillations within the past decade, the nanoscale mapping of those dynamics remained a challenge. In consequence, insight could mainly be gained via micromagnetic simulations. Scientists from Max Planck Institute of Solid State Research in collaboration with University of Stuttgart have shown a first direct experimental measurement of freerunning auto-oscillation in such an oscillator device using the high sensitivity and spatial resolution of a color-center based quantum sensing approach.
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