Searching for ultralight axion-like dark matter using precision magnetometry and magnetic resonance

I will describe two precision experiments searching for ultralight axion-like dark matter. The SHAFT experiment is sensitive to the electromagnetic coupling in the 12 peV to 12 neV mass range. The CASPEr-e experiment is sensitive to the EDM and the gradient couplings in the 162 neV to 166 neV mass range. These two searches have recently produced leading experimental limits on all three of the possible interactions of axion-like dark matter in those mass ranges.