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October 1, 2026
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Magnetodipolar interaction and quasiparticles delocalization in disordered quantum magnets

Journal of Magnetism and Magnetic Materials. 2022. Vol. 560. Article 169640.
Oleg I. Utesov

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.

Research target: Physics
Language: English
Full text
DOI
Text on another site
Keywords: Квазичастицыlong-range interactionдальнодействиеAnderson localizationквантовые магнетикиquantum magnetsандерсоновская локализацияquasiparticles
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