Magnetodipolar interaction and quasiparticles delocalization in disordered quantum magnets

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Magnetodipolar interaction and quasiparticles delocalization in disordered quantum magnets. / Utesov, Oleg I.

In: Journal of Magnetism and Magnetic Materials, Vol. 560, 169640, 15.10.2022.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{74475ae430f2494fa881401577add233,

title = "Magnetodipolar interaction and quasiparticles delocalization in disordered quantum magnets",

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.",

keywords = "Delocalization, Disorder, Magnetodipolar interaction, Quantum magnets, Sub-diffusion",

author = "Utesov, {Oleg I.}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = oct,

day = "15",

doi = "10.1016/j.jmmm.2022.169640",

language = "English",

volume = "560",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Magnetodipolar interaction and quasiparticles delocalization in disordered quantum magnets

AU - Utesov, Oleg I.

PY - 2022/10/15

Y1 - 2022/10/15

N2 - 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.

AB - 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.

KW - Delocalization

KW - Disorder

KW - Magnetodipolar interaction

KW - Quantum magnets

KW - Sub-diffusion

UR - http://www.scopus.com/inward/record.url?scp=85133168383&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2022.169640

DO - 10.1016/j.jmmm.2022.169640

M3 - Article

AN - SCOPUS:85133168383

VL - 560

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

M1 - 169640

ER -

ID: 97155905