Abstract :
Robinson et al. [J.W.A. Robinson, et al., Science 329 (2010) 59] reported control of spin-triplet supercurrents into ferromagnets by varying the thicknesses of the Ho injector and attributed the voltage peaks to non-integer spiral wavelengths of λ / 2 and 5 λ / 2 in Ho. Here we demonstrate that these peaks correspond to λ / 2 and 3 λ / 2 .
