Probing a spin transfer controlled magnetic nanowire with a single nitrogen-vacancy spin in bulk diamond
arXiv:1807.03411 · doi:10.1021/acs.nanolett.8b03012
Abstract
The point-like nature and exquisite magnetic field sensitivity of the nitrogen vacancy (NV) center in diamond can provide information about the inner workings of magnetic nanocircuits in complement with traditional transport techniques. Here we use a single NV in bulk diamond to probe the stray field of a ferromagnetic nanowire controlled by spin transfer (ST) torques. We first report an unambiguous measurement of ST tuned, parametrically driven, large-amplitude magnetic oscillations. At the same time, we demonstrate that such magnetic oscillations alone can directly drive NV spin transitions, providing a potential new means of control. Finally, we use the NV as a local noise thermometer, observing strong ST damping of the stray field noise, consistent with magnetic cooling from room temperature to 150 K.
arXiv comment6 pages, 5 figures, plus supplementary information
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Cited by in corpus (10)
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