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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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Title
Spin texture induced by non-magnetic doping and spin dynamics in 2D triangular lattice antiferromagnet h-Y(Mn,Al)O3
Author(s)
Pyeongjae Park; Kisoo Park; Joosung Oh; Ki Hoon Lee; Jonathan C. Leiner; Hasung Sim; Taehun Kim; Jaehong Jeong; Rule, Kirrily C.; Kamazawa, Kazuya; Iida, Kazuki; Perring, T.G.; Woo, Hyungje; Cheong, S.-W.; Zhitomirsky, M.E.; Chernyshev, A.L.; Je-Geun Park
Publication Date
2021-04-16
Journal
Nature Communications, v.12, no.1
Publisher
Nature Research
Abstract
© 2021, The Author(s).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.
URI
https://pr.ibs.re.kr/handle/8788114/10878
DOI
10.1038/s41467-021-22569-3
ISSN
2041-1723
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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