Spin texture induced by non-magnetic doping and spin dynamics in 2D triangular lattice antiferromagnet h-Y(Mn,Al)O3

Pyeongjae Park; Kisoo Park; Joosung Oh; Ki Hoon Lee; Jonathan C. Leiner; Hasung Sim; Taehun Kim; Jaehong Jeong; Kirrily C. Rule; Kazuya Kamazawa; Kazuki Iida; T. G. Perring; Hyungje Woo; S. W. Cheong; M. E. Zhitomirsky; A. L. Chernyshev; Je Geun Park

doi:10.1038/s41467-021-22569-3

Spin texture induced by non-magnetic doping and spin dynamics in 2D triangular lattice antiferromagnet h-Y(Mn,Al)O₃

Pyeongjae Park
, Kisoo Park
, Joosung Oh
, Ki Hoon Lee
, Jonathan C. Leiner
, Hasung Sim
, Taehun Kim
, Jaehong Jeong
, Kirrily C. Rule
, Kazuya Kamazawa
, Kazuki Iida
, T. G. Perring
, Hyungje Woo
, S. W. Cheong
, M. E. Zhitomirsky
, A. L. Chernyshev
, Je Geun Park

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

12 Scopus citations

Abstract

Novel effects induced by nonmagnetic impurities in frustrated magnets and quantum spin liquid represent a highly nontrivial and interesting problem. A theoretical proposal of extended modulated spin structures induced by doping of such magnets, distinct from the well-known skyrmions has attracted significant interest. Here, we demonstrate that nonmagnetic impurities can produce such extended spin structures in h-YMnO₃, a triangular antiferromagnet with noncollinear magnetic order. Using inelastic neutron scattering (INS), we measured the full dynamical structure factor in Al-doped h-YMnO₃ and confirmed the presence of magnon damping with a clear momentum dependence. Our theoretical calculations can reproduce the key features of the INS data, supporting the formation of the proposed spin textures. As such, our study provides the first experimental confirmation of the impurity-induced spin textures. It offers new insights and understanding of the impurity effects in a broad class of noncollinear magnetic systems.

Original language	English
Article number	2306
Journal	Nature Communications
Volume	12
Issue number	1
DOIs	https://doi.org/10.1038/s41467-021-22569-3
State	Published - Dec 1 2021
Externally published	Yes

Funding

We thank Collin Broholm and Daniel I. Khomskii for fruitful discussions. This work was supported by the Leading Researcher Program of the National Research Foundation of Korea (Grant No. 2020R1A3B2079375) and the Institute for Basic Science in Korea (IBS-R009-G1). The inelastic neutron scattering experiments at the Japan Proton Accelerator Research Complex (J-PARC) was performed under the user program (Proposal and No. 2016A0171 No. 2017B0005). M.E.Z. acknowledges financial support from ANR, France (Grant No. ANR-18-CE05-0023). The work of A. L. C. was supported by the U.S. DOE, Office of Science, Basic Energy Sciences under Awards DE-FG02-04ER46174 and DE-SC0021221. S.-W. C was supported by the DOE under Grant No. DOE: DE-FG02-07ER46382.

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10.1038/s41467-021-22569-3

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Park, P., Park, K., Oh, J., Lee, K. H., Leiner, J. C., Sim, H., Kim, T., Jeong, J., Rule, K. C., Kamazawa, K., Iida, K., Perring, T. G., Woo, H., Cheong, S. W., Zhitomirsky, M. E., Chernyshev, A. L., & Park, J. G. (2021). Spin texture induced by non-magnetic doping and spin dynamics in 2D triangular lattice antiferromagnet h-Y(Mn,Al)O₃. Nature Communications, 12(1), Article 2306. https://doi.org/10.1038/s41467-021-22569-3

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title = "Spin texture induced by non-magnetic doping and spin dynamics in 2D triangular lattice antiferromagnet h-Y(Mn,Al)O3",

abstract = "Novel effects induced by nonmagnetic impurities in frustrated magnets and quantum spin liquid represent a highly nontrivial and interesting problem. A theoretical proposal of extended modulated spin structures induced by doping of such magnets, distinct from the well-known skyrmions has attracted significant interest. Here, we demonstrate that nonmagnetic impurities can produce such extended spin structures in h-YMnO3, a triangular antiferromagnet with noncollinear magnetic order. Using inelastic neutron scattering (INS), we measured the full dynamical structure factor in Al-doped h-YMnO3 and confirmed the presence of magnon damping with a clear momentum dependence. Our theoretical calculations can reproduce the key features of the INS data, supporting the formation of the proposed spin textures. As such, our study provides the first experimental confirmation of the impurity-induced spin textures. It offers new insights and understanding of the impurity effects in a broad class of noncollinear magnetic systems.",

author = "Pyeongjae Park and Kisoo Park and Joosung Oh and Lee, \{Ki Hoon\} and Leiner, \{Jonathan C.\} and Hasung Sim and Taehun Kim and Jaehong Jeong and Rule, \{Kirrily C.\} and Kazuya Kamazawa and Kazuki Iida and Perring, \{T. G.\} and Hyungje Woo and Cheong, \{S. W.\} and Zhitomirsky, \{M. E.\} and Chernyshev, \{A. L.\} and Park, \{Je Geun\}",

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Park, P, Park, K, Oh, J, Lee, KH, Leiner, JC, Sim, H, Kim, T, Jeong, J, Rule, KC, Kamazawa, K, Iida, K, Perring, TG, Woo, H, Cheong, SW, Zhitomirsky, ME, Chernyshev, AL & Park, JG 2021, 'Spin texture induced by non-magnetic doping and spin dynamics in 2D triangular lattice antiferromagnet h-Y(Mn,Al)O₃', Nature Communications, vol. 12, no. 1, 2306. https://doi.org/10.1038/s41467-021-22569-3

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T1 - Spin texture induced by non-magnetic doping and spin dynamics in 2D triangular lattice antiferromagnet h-Y(Mn,Al)O3

AU - Park, Pyeongjae

AU - Park, Kisoo

AU - Oh, Joosung

AU - Lee, Ki Hoon

AU - Leiner, Jonathan C.

AU - Sim, Hasung

AU - Kim, Taehun

AU - Jeong, Jaehong

AU - Rule, Kirrily C.

AU - Kamazawa, Kazuya

AU - Iida, Kazuki

AU - Perring, T. G.

AU - Woo, Hyungje

AU - Cheong, S. W.

AU - Zhitomirsky, M. E.

AU - Chernyshev, A. L.

AU - Park, Je Geun

PY - 2021/12/1

Y1 - 2021/12/1

N2 - Novel effects induced by nonmagnetic impurities in frustrated magnets and quantum spin liquid represent a highly nontrivial and interesting problem. A theoretical proposal of extended modulated spin structures induced by doping of such magnets, distinct from the well-known skyrmions has attracted significant interest. Here, we demonstrate that nonmagnetic impurities can produce such extended spin structures in h-YMnO3, a triangular antiferromagnet with noncollinear magnetic order. Using inelastic neutron scattering (INS), we measured the full dynamical structure factor in Al-doped h-YMnO3 and confirmed the presence of magnon damping with a clear momentum dependence. Our theoretical calculations can reproduce the key features of the INS data, supporting the formation of the proposed spin textures. As such, our study provides the first experimental confirmation of the impurity-induced spin textures. It offers new insights and understanding of the impurity effects in a broad class of noncollinear magnetic systems.

AB - Novel effects induced by nonmagnetic impurities in frustrated magnets and quantum spin liquid represent a highly nontrivial and interesting problem. A theoretical proposal of extended modulated spin structures induced by doping of such magnets, distinct from the well-known skyrmions has attracted significant interest. Here, we demonstrate that nonmagnetic impurities can produce such extended spin structures in h-YMnO3, a triangular antiferromagnet with noncollinear magnetic order. Using inelastic neutron scattering (INS), we measured the full dynamical structure factor in Al-doped h-YMnO3 and confirmed the presence of magnon damping with a clear momentum dependence. Our theoretical calculations can reproduce the key features of the INS data, supporting the formation of the proposed spin textures. As such, our study provides the first experimental confirmation of the impurity-induced spin textures. It offers new insights and understanding of the impurity effects in a broad class of noncollinear magnetic systems.

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Spin texture induced by non-magnetic doping and spin dynamics in 2D triangular lattice antiferromagnet h-Y(Mn,Al)O₃

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