Abstract
We show, with the help of polarized neutrons, that the cubic magnets with Dzyaloshinskii-Moriya interaction can be switched between left (for , 0.15) and right (for , 0.25, 0.3, 0.5) chiral states of the spin helix. The absolute structure was evaluated using x-ray diffraction. The crystals are shown to be enantiopure and the structural chirality changes from right handed for to left handed for . These compounds are compared with the etalon sample of MnSi which is identified as having the left-handed chirality both in the magnetic and crystallographic sense.
- Received 2 October 2008
DOI:https://doi.org/10.1103/PhysRevLett.102.037204
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