Chemical prediction of Skyrmion lattice candidates
ORAL
Abstract
Chiral spin textures such as magnetic skyrmions offer a route towards more energy-efficient datastorage
technologies. Only a few dozen materials are known to host densely packed ordered phases of
skyrmions, also known as skyrmion lattices (SkLs), and most of them are non-centrosymmetric, with the
skyrmions originating in Dzyaloshinskii-Moriya interactions. Recently, however, centrosymmetric SkLs
were reported in lanthanide intermetallics, where the origin of the chiral texture is thought to be in
frustrated Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions.1–4 In this talk, we report a chemical
design principle for SKL phases, based on combining our groups previous expertise predicting topological
phases with RKKY magnets. We also show that compounds we predicted accordingly show signs of a
skyrmion lattice phase, as evidenced by a strong topological Hall effect.
References:
1 T. Kurumaji, T. Nakajima, M. Hirschberger, A. Kikkawa, Y. Yamasaki, H. Sagayama, H. Nakao, Y.
Taguchi, T.-h. Arima, and Y. Tokura, “Skyrmion lattice with a giant topological Hall effect in a frustrated
triangular-lattice magnet”, Science 365, 914–918 (2019).
2 M. Hirschberger, T. Nakajima, S. Gao, L. Peng, A. Kikkawa, T. Kurumaji, M. Kriener, Y. Yamasaki, H.
Sagayama, H. Nakao, K. Ohishi, K. Kakurai, Y. Taguchi, X. Yu, T.-h. Arima, and Y. Tokura, “Skyrmion
phase and competing magnetic orders on a breathing kagomÅLe lattice”, Nature Communications 10, 5831
(2019).
3 N. D. Khanh, T. Nakajima, X. Yu, S. Gao, K. Shibata, M. Hirschberger, Y. Yamasaki, H. Sagayama,
H. Nakao, L. Peng, K. Nakajima, R. Takagi, T.-h. Arima, Y. Tokura, and S. Seki, “Nanometric square
skyrmion lattice in a centrosymmetric tetragonal magnet”, Nature Nanotechnology 15, 444–449 (2020).
4 R. Takagi, N. Matsuyama, V. Ukleev, L. Yu, J. S. White, S. Francoual, J. R. L. Mardegan, S. Hayami, H.
Saito, K. Kaneko, K. Ohishi, Y. .Onuki, T.-h. Arima, Y. Tokura, T. Nakajima, and S. Seki, “Square and
rhombic lattices of magnetic skyrmions in a centrosymmetric binary compound”, Nature Communications
13, 1472 (2022).
technologies. Only a few dozen materials are known to host densely packed ordered phases of
skyrmions, also known as skyrmion lattices (SkLs), and most of them are non-centrosymmetric, with the
skyrmions originating in Dzyaloshinskii-Moriya interactions. Recently, however, centrosymmetric SkLs
were reported in lanthanide intermetallics, where the origin of the chiral texture is thought to be in
frustrated Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions.1–4 In this talk, we report a chemical
design principle for SKL phases, based on combining our groups previous expertise predicting topological
phases with RKKY magnets. We also show that compounds we predicted accordingly show signs of a
skyrmion lattice phase, as evidenced by a strong topological Hall effect.
References:
1 T. Kurumaji, T. Nakajima, M. Hirschberger, A. Kikkawa, Y. Yamasaki, H. Sagayama, H. Nakao, Y.
Taguchi, T.-h. Arima, and Y. Tokura, “Skyrmion lattice with a giant topological Hall effect in a frustrated
triangular-lattice magnet”, Science 365, 914–918 (2019).
2 M. Hirschberger, T. Nakajima, S. Gao, L. Peng, A. Kikkawa, T. Kurumaji, M. Kriener, Y. Yamasaki, H.
Sagayama, H. Nakao, K. Ohishi, K. Kakurai, Y. Taguchi, X. Yu, T.-h. Arima, and Y. Tokura, “Skyrmion
phase and competing magnetic orders on a breathing kagomÅLe lattice”, Nature Communications 10, 5831
(2019).
3 N. D. Khanh, T. Nakajima, X. Yu, S. Gao, K. Shibata, M. Hirschberger, Y. Yamasaki, H. Sagayama,
H. Nakao, L. Peng, K. Nakajima, R. Takagi, T.-h. Arima, Y. Tokura, and S. Seki, “Nanometric square
skyrmion lattice in a centrosymmetric tetragonal magnet”, Nature Nanotechnology 15, 444–449 (2020).
4 R. Takagi, N. Matsuyama, V. Ukleev, L. Yu, J. S. White, S. Francoual, J. R. L. Mardegan, S. Hayami, H.
Saito, K. Kaneko, K. Ohishi, Y. .Onuki, T.-h. Arima, Y. Tokura, T. Nakajima, and S. Seki, “Square and
rhombic lattices of magnetic skyrmions in a centrosymmetric binary compound”, Nature Communications
13, 1472 (2022).
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Presenters
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Leslie M Schoop
Princeton University
Authors
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Leslie M Schoop
Princeton University
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Grigorii Skorupskii
Department of Chemistry, Princeton University
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Fabio Orlandi
ISIS Neutron and Muon Source, ISIS neutron source
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Milena Jovanovic
Princeton University, Department of Chemistry, Princeton University
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Rinsuke Yamada
Univ of Tokyo, University of Tokyo
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Pascal Manuel
ISIS Pulsed Neutron Source UK, ISIS Neutron and Muon Source, ISIS neutron source
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Max Hirschberger
University of Tokyo