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Band Filling Control of the Dzyaloshinskii-Moriya Interaction in Weakly Ferromagnetic Insulators
Univ Grenoble Alpes, CNRS, Grenoble INP, SIMaP, F-38000 Grenoble, France..
Diamond Light Source Ltd, Diamond House,Harwell Sci & Innovat Campus, Didcot OX11 0DE, Oxon, England..
Moscow MV Lomonosov State Univ, Moscow 119991, Russia..
RAS, FSRC Crystallog & Photon, AV Shubnikov Inst Crystallog, Moscow 119333, Russia..
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2017 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 119, no 16, article id 167201Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2017. Vol. 119, no 16, article id 167201
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Physical Sciences
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URN: urn:nbn:se:uu:diva-340756DOI: 10.1103/PhysRevLett.119.167201ISI: 000413293800008OAI: oai:DiVA.org:uu-340756DiVA: diva2:1181435
Available from: 2018-02-08 Created: 2018-02-08 Last updated: 2018-02-08Bibliographically approved

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