Band filling control of the Dzyaloshinskii-Moriya interaction in weakly ferromagnetic insulators

Abstract

We observe and explain theoretically a dramatic evolution of the Dzyaloshinskii-Moriya interaction 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 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 3 d shell filling. The model gives a clue for qualitative understanding of the evolution of the DMI in Mott and charge transfer insulators.

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• Toward room-temperature nanoscale skyrmions in ultrathin films
• Multiple Topological Magnetism in van der Waals Heterostructure of MnTe2/ZrS2
• Crystal growth engineering and origin of the weak ferromagnetism in antiferromagnetic matrix of orthochromates from $t$-$e$ orbital hybridization
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• Enhanced Magnetism & Time - Stable Remanence at the Interface of Hematite and Carbon Nanotubes
• Unraveling the Complexity of the Dzyaloshinskii-Moriya Interaction in Layered Magnets: The Full Magnitude and Chirality Control
• Quantum-Confined Tunable Ferromagnetism on the Surface of a van der Waals Antiferromagnet NaCrTe2
• Synthesis and observation of optical skyrmionic structure in free space
• Releasing latent chirality in magnetic two-dimensional materials