Record Details

Title:
Band Filling Control of the Dzyaloshinskii-Moriya Interaction in Weakly Ferromagnetic Insulators
Affiliation(s):
XFEL.EU staff, Other
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Topic:
Scientific area:
Abstract:
We observe and explain theoretically a dramatic evolution of the Dzyaloshinskii-Moriya interaction (DMI) in the series of isostructural weak ferromagnets, $MnCO_{3}$, $FeBO_{3}$, $CoCO_{3}$, and $NiCO_{3}$. The sign of the interaction is encoded in the phase of the x-ray magnetic diffraction amplitude, observed through interference with resonant quadrupole scattering. We find very good quantitative agreement with first-principles electronic structure calculations, reproducing both sign and magnitude through the series, and propose a simplified “toy model” to explain the change in sign with $3d$ shell filling. The model gives insight into the evolution of the DMI in Mott and charge transfer insulators.
Imprint:
American Physical Society, 2017
Journal Information:
Physical Review Letters, 119 (16), 167201 (2017)
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Language(s):
English
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