2020
DOI: 10.48550/arxiv.2006.12882
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Spontaneous cycloidal order mediating a spin-reorientation transition in a polar metal

C. D. Dashwood,
L. S. I. Veiga,
Q. Faure
et al.

Abstract: We show how, in a polar crystal with uniform Dzyaloshinskii-Moriya interaction, modulated order can spontaneously emerge when magnetic anisotropies compete at a spin-reorientation transition. Combining neutron and resonant x-ray scattering, we reveal that the spin-reorientation in Ca3Ru2O7 is mediated by an incommensurate cycloid whose eccentricity evolves smoothly with temperature. Our results suggest that the application of a magnetic field continuously generates higher harmonic modulations, establishing a r… Show more

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