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Band Filling Control of the Dzyaloshinskii-Moriya Interaction in Weakly Ferromagnetic Insulators

DOI: 10.1103/PhysRevLett.119.167201 DOI Help

Authors: G. Beutier (Univ. Grenoble Alpes, CNRS) , S. P. Collins (Diamond Light Source) , O. V. Dimitrova (M. V. Lomonosov Moscow State University) , V. E. Dmitrienko (A. V. Shubnikov Institute of Crystallography) , M. I. Katsnelson (Radboud University Nijmegen; Ural Federal University) , Y. O. Kvashnin (Uppsala University) , A. I. Lichtenstein (Ural Federal University; I. Institut für Theoretische Physik, Universität Hamburg) , V. V. Mazurenko (Ural Federal University) , A. G. A. Nisbet (Diamond Light Source) , E. N. Ovchinnikova (M. V. Lomonosov Moscow State University) , D. Pincini (University College London; Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review Letters , VOL 119

State: Published (Approved)
Published: October 2017
Diamond Proposal Number(s): 7703 , 11751

Open Access Open Access

Abstract: We observe and explain theoretically a dramatic evolution of the Dzyaloshinskii-Moriya interaction (DMI) in the series of isostructural weak ferromagnets, MnCO3, FeBO3, CoCO3, and NiCO3. 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.

Journal Keywords: Dzyaloshinskii-Moriya interaction; Exchange interaction; Antiferromagnets; Ferromagnets; Noncollinear magnets ;Single crystal materials; Density functional theory; LDA+U; Resonant elastic x-ray scattering; X-ray diffraction

Subject Areas: Physics

Instruments: I16-Materials and Magnetism

Other Facilities: European Synchrotron Radiation Facility

Added On: 06/11/2017 11:18


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