Magnetodipolar interaction and quasiparticles delocalization in disordered quantum magnets

Oleg I. Utesov

doi:10.1016/j.jmmm.2022.169640

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arXiv · 2203.12305

Magnetodipolar interaction and quasiparticles delocalization in disordered quantum magnets

Oleg I. Utesov

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Abstract

It is well-known that disordered quantum magnets usually host localized elementary excitations in gapped phases. Here we show that long-range magnetodipolar interaction can lead to quasiparticles delocalization in the three-dimensional case, similarly to the phenomenon previously described for localized vibrational modes in disordered solids. Employing renormalization group-like ideas, the average eigenmode occupation number is found to scale with the system size, which also leads to sub-diffusive dynamical properties of the system.

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Oleg I. Utesov. 2022-03-23. Magnetodipolar interaction and quasiparticles delocalization in disordered quantum magnets. https://doi.org/10.1016/j.jmmm.2022.169640

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