Magnetic properties of ruthenium dioxide (RuO2) and charge-magnetic interference in Bragg diffraction of circularly polarized x-rays

Abstract

Rutile-type RuO2 likely supports a simple antiferromagnetic structure which can be verified by x-ray Bragg diffraction. Three magnetic motifs that do not break translation symmetry are explored in calculations of amplitudes suitable for diffraction enhanced by tuning the primary x-ray energy to a ruthenium atomic resonance. Coupling to x-ray helicity through a charge-magnetic interference is common to all motifs, together with magnetic and charge intensities in quadrature in the rotated channel of polarization. Necessary conditions for these diffraction phenomena are a centrosymmetric crystal structure, null magnetic propagation vector, and absence of a linear magnetoelectric effect. Published x-ray diffraction data for RuO2 was analysed by the authors against a magnetic motif that does not satisfy the conditions. A polarized neutron study of antiferromagnetic domains can be achieved with a sample that meets the stated crystal and magnetic symmetries.

References in corpus (12)

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• Crystal Hall effect in Collinear Antiferromagnets
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Cited by in corpus (13)

• Crystal Thermal Transport in Altermagnetic RuO2
• Landau Theory of Altermagnetism
• Fragility of the magnetic order in the prototypical altermagnet RuO${}_2$
• Observation of Spin Splitting in Room-Temperature Metallic Antiferromagnet CrSb
• Transport across junctions of altermagnets with normal metals and ferromagnets
• X-ray Magnetic Circular Dichroism in RuO${}_2$
• Strain-induced orbital energy shift in antiferromagnetic RuO2 revealed by resonant elastic x-ray scattering
• Multiband transport in RuO${}_2$
• Determination of the Néel vector in rutile altermagnets through x-ray magnetic circular dichroism: the case of MnF${}_2$
• Strain controlled g- to d-wave transition in altermagnetic CrSb
• Antiferromagnetic iron based magnetoelectric compounds
• Absence of magnetic order in epitaxial RuO2 revealed by X-ray linear dichroism
• Moiré-resonant surface state in ultrathin RuO${}_2$