Abstract
The low temperature dependence of the nuclear magnetic resonance frequency and spin–lattice relaxation rate measured in the chiral magnet MnSi by Yasuoka and coworkers [J.Phys.Soc.Jpn.85, 073701 (2016)] is interpreted in terms of helimagnon excitations. The theoretically predicted gapless and anisotropic dispersion relation which is probed at extremely small energy is experimentally confirmed. Whenever comparison is possible, the results are found quantitatively consistent with those of the inelastic neutron scattering and muon spin rotation and relaxation techniques. Further studies are suggested.
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