A case for Bragg diffraction by a noncollinear (PT)-symmetric antiferromagnet Cu₂(MoO₄)(SeO₃)

2024/07/26 by Lovesey, S. W., van der Laan, G.
#FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el)

paper · doi:10.48550/arxiv.2407.18640

Abstract

Antiferromagnetic compounds chromium sesquioxide (Cr₂O₃) and dioxomolybdenum selenite present linear magnetoelectric effects. Anti-inversion symmetry in the corresponding magnetic crystal classes dictate the makeup of magnetic Bragg diffraction patterns. Copper axial and polar magnetic multipoles contribute to resonant x-ray and magnetic neutron amplitudes in a symmetry informed analysis of monoclinic Cu₂(MoO₄)(SeO₃) presented with a view to steering future diffraction experiments. The compound might be viewed as a low-dimensional quantum magnet on account of its crystal structure and extreme Cu spin (S = 1/2).

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