Anomalous Antiferromagnetism in Metallic RuO2 Determined by Resonant X-ray Scattering

We studied the magnetic ordering of thin films and bulk crystals of rutile RuO2 using resonant X-ray scattering across the Ru L2 absorption edge. Combining a polarization analysis and azimuthal-angle dependence of the magnetic Bragg signal, we have established the presence of G-type anti-ferromagnet...

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Bibliographic Details
Published in:Physical review letters 2019-01, Vol.122 (1)
Main Authors: Zhu, Z. H., Strempfer, J., Rao, R. R., Occhialini, C. A., Pelliciari, J., Choi, Y., Kawaguchi, T., You, H., Mitchell, J. F., Shao-Horn, Y., Comin, R.
Format: Article
Language:English
Subjects:
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
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Summary:We studied the magnetic ordering of thin films and bulk crystals of rutile RuO2 using resonant X-ray scattering across the Ru L2 absorption edge. Combining a polarization analysis and azimuthal-angle dependence of the magnetic Bragg signal, we have established the presence of G-type anti-ferromagnetism in RuO2 with TN > 300 K. In addition to revealing a spin-ordered ground state in the simplest ruthenium oxide compound, the persistence of magnetic order even in nanometer-thick films lays the ground for potential applications of RuO2 in antiferromagnetic spintronics.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.122.017202