Spin wave stiffness and damping in a frustrated chiral helimagnet Co8Zn8Mn4 as measured by small-angle neutron scattering

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Spin wave stiffness and damping in a frustrated chiral helimagnet Co8Zn8Mn4 as measured by small-angle neutron scattering. / Ukleev, V.; Pschenichnyi, K. A.; Utesov, O.; Karube, K.; Mühlbauer, S.; Cubitt, R.; Tokura, Y.; Taguchi, Y.; White, J. S.; Grigoriev, S. V.

In: Physical Review Research, Vol. 4, No. 2, 023239, 24.06.2022.

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

Author

Ukleev, V. ; Pschenichnyi, K. A. ; Utesov, O. ; Karube, K. ; Mühlbauer, S. ; Cubitt, R. ; Tokura, Y. ; Taguchi, Y. ; White, J. S. ; Grigoriev, S. V. / Spin wave stiffness and damping in a frustrated chiral helimagnet Co8Zn8Mn4 as measured by small-angle neutron scattering. In: Physical Review Research. 2022 ; Vol. 4, No. 2.

BibTeX

@article{a9c604d76dae45a782e092e7dec78aa5,

title = "Spin wave stiffness and damping in a frustrated chiral helimagnet Co8Zn8Mn4 as measured by small-angle neutron scattering",

abstract = "Multiple intriguing low-temperature phenomena have recently been discovered in the family of chiral cubic Co-Zn-Mn compounds with a β-Mn-type structure. In particular, Co8Zn8Mn4 displays a reduction of the helical spiral pitch on cooling along with lattice shape transformations of metastable skyrmions and the manifestation of peculiar magnetic textures due to strong magnetocrystalline anisotropy. Here we report on temperature-dependent measurements of helimagnon excitations in the field polarized regime Co8Zn8Mn4 using the spin-wave (SW) small-angle neutron-scattering technique. By applying a new analytical expression to interpret the data, quantitative estimates for both SW stiffness and damping are extracted across a wide temperature range between 70 and 250 K. We speculate that their nontrivial temperature dependencies arise due to the effects of magnetic frustration arising from Mn magnetic moments, which is further reflected in continuous variations of both exchange and Dzyaloshinskii-Moriya interactions. ",

author = "V. Ukleev and Pschenichnyi, {K. A.} and O. Utesov and K. Karube and S. M{\"u}hlbauer and R. Cubitt and Y. Tokura and Y. Taguchi and White, {J. S.} and Grigoriev, {S. V.}",

note = "Publisher Copyright: {\textcopyright} 2022 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.",

year = "2022",

month = jun,

day = "24",

doi = "10.1103/PhysRevResearch.4.023239",

language = "English",

volume = "4",

journal = "Physical Review Research",

issn = "2643-1564",

publisher = "American Physical Society",

number = "2",

}

RIS

TY - JOUR

T1 - Spin wave stiffness and damping in a frustrated chiral helimagnet Co8Zn8Mn4 as measured by small-angle neutron scattering

AU - Ukleev, V.

AU - Pschenichnyi, K. A.

AU - Utesov, O.

AU - Karube, K.

AU - Mühlbauer, S.

AU - Cubitt, R.

AU - Tokura, Y.

AU - Taguchi, Y.

AU - White, J. S.

AU - Grigoriev, S. V.

N1 - Publisher Copyright: © 2022 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

PY - 2022/6/24

Y1 - 2022/6/24

N2 - Multiple intriguing low-temperature phenomena have recently been discovered in the family of chiral cubic Co-Zn-Mn compounds with a β-Mn-type structure. In particular, Co8Zn8Mn4 displays a reduction of the helical spiral pitch on cooling along with lattice shape transformations of metastable skyrmions and the manifestation of peculiar magnetic textures due to strong magnetocrystalline anisotropy. Here we report on temperature-dependent measurements of helimagnon excitations in the field polarized regime Co8Zn8Mn4 using the spin-wave (SW) small-angle neutron-scattering technique. By applying a new analytical expression to interpret the data, quantitative estimates for both SW stiffness and damping are extracted across a wide temperature range between 70 and 250 K. We speculate that their nontrivial temperature dependencies arise due to the effects of magnetic frustration arising from Mn magnetic moments, which is further reflected in continuous variations of both exchange and Dzyaloshinskii-Moriya interactions.

AB - Multiple intriguing low-temperature phenomena have recently been discovered in the family of chiral cubic Co-Zn-Mn compounds with a β-Mn-type structure. In particular, Co8Zn8Mn4 displays a reduction of the helical spiral pitch on cooling along with lattice shape transformations of metastable skyrmions and the manifestation of peculiar magnetic textures due to strong magnetocrystalline anisotropy. Here we report on temperature-dependent measurements of helimagnon excitations in the field polarized regime Co8Zn8Mn4 using the spin-wave (SW) small-angle neutron-scattering technique. By applying a new analytical expression to interpret the data, quantitative estimates for both SW stiffness and damping are extracted across a wide temperature range between 70 and 250 K. We speculate that their nontrivial temperature dependencies arise due to the effects of magnetic frustration arising from Mn magnetic moments, which is further reflected in continuous variations of both exchange and Dzyaloshinskii-Moriya interactions.

UR - http://www.scopus.com/inward/record.url?scp=85133970667&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/9c07fdfb-464e-33d8-988f-7f082148ff47/

U2 - 10.1103/PhysRevResearch.4.023239

DO - 10.1103/PhysRevResearch.4.023239

M3 - Article

AN - SCOPUS:85133970667

VL - 4

JO - Physical Review Research

JF - Physical Review Research

SN - 2643-1564

IS - 2

M1 - 023239

ER -

ID: 97348401