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arXiv · 2012.12500

Analytic description of spin waves in dipolar/octupolar pyrochlore magnets

I. A. Assi·S. H. Curnoe
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Abstract

We derive analytic forms for spin waves in pyrochlore magnets with dipolar-octupolar interactions, such as ${\rm Nd}_2{\rm Zr}_2{\rm O}_7$. We obtain full knowledge of the diagonalized magnonic Hamiltonian within the linear spin wave approximation. We also consider the effect of a "breathing mode" as a perturbation of this system. The breathing mode lifts the degeneracy of the upper band of the spin wave dispersion along the direction $X\to W$ in $k$-space.

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I. A. Assi, S. H. Curnoe. 2020-12-23. Analytic description of spin waves in dipolar/octupolar pyrochlore magnets. https://doi.org/10.1088/1361-648x/abef9e

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