A correlated ferromagnetic polar metal by design

Jianbing Zhang; Shengchun Shen; Danilo Puggioni; Meng Wang; Haozhi Sha; Xueli Xu; Yingjie Lyu; Huining Peng; Wandong Xing; Lauren N. Walters; Linhan Liu; Yujia Wang; De Hou; Chuanying Xi; Li Pi; Hiroaki Ishizuka; Yoshinori Kotani; Motoi Kimata; Hiroyuki Nojiri; Tetsuya Nakamura; Tian Liang; Di Yi; Tianxiang Nan; Jiadong Zang; Zhigao Sheng; Qing He; Shuyun Zhou; Naoto Nagaosa; Ce Wen Nan; Yoshinori Tokura; Rong Yu; James M. Rondinelli; Pu Yu

doi:10.1038/s41563-024-01856-6

A correlated ferromagnetic polar metal by design

Jianbing Zhang, Shengchun Shen, Danilo Puggioni, Meng Wang, Haozhi Sha, Xueli Xu, Yingjie Lyu, Huining Peng, Wandong Xing, Lauren N. Walters, Linhan Liu, Yujia Wang, De Hou, Chuanying Xi, Li Pi, Hiroaki Ishizuka, Yoshinori Kotani, Motoi Kimata, Hiroyuki Nojiri, Tetsuya NakamuraTian Liang, Di Yi, Tianxiang Nan, Jiadong Zang, Zhigao Sheng, Qing He, Shuyun Zhou, Naoto Nagaosa, Ce Wen Nan, Yoshinori Tokura, Rong Yu^*, James M. Rondinelli^*, Pu Yu^*

^*Corresponding author for this work

Materials Science and Engineering

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

11 Scopus citations

Abstract

Polar metals have recently garnered increasing interest because of their promising functionalities. Here we report the experimental realization of an intrinsic coexisting ferromagnetism, polar distortion and metallicity in quasi-two-dimensional Ca₃Co₃O₈. This material crystallizes with alternating stacking of oxygen tetrahedral CoO₄ monolayers and octahedral CoO₆ bilayers. The ferromagnetic metallic state is confined within the quasi-two-dimensional CoO₆ layers, and the broken inversion symmetry arises simultaneously from the Co displacements. The breaking of both spatial-inversion and time-reversal symmetries, along with their strong coupling, gives rise to an intrinsic magnetochiral anisotropy with exotic magnetic field-free non-reciprocal electrical resistivity. An extraordinarily robust topological Hall effect persists over a broad temperature–magnetic field phase space, arising from dipole-induced Rashba spin–orbit coupling. Our work not only provides a rich platform to explore the coupling between polarity and magnetism in a metallic system, with extensive potential applications, but also defines a novel design strategy to access exotic correlated electronic states.

Original language	English (US)
Pages (from-to)	912-919
Number of pages	8
Journal	Nature materials
Volume	23
Issue number	7
DOIs	https://doi.org/10.1038/s41563-024-01856-6
State	Published - Jul 2024

Funding

This study was financially supported by the Basic Science Center Project of National Natural Science Foundation of China (NFSC) under grant no. 52388201, the NFSC (52025024), the National Key R&D Program of China (2021YFE0107900, 2023YFA1406400, 2021YFA1400100 and 2021YFA1400300), the Beijing Natural Science Foundation (grant no. Z200007), the NFSC (52161135103 and U2032218), the Beijing Advanced Innovation Center for Future Chip (ICFC), the Army Research Office (ARO) under grant no. W911NF-15-1-0017 and the National Science Foundation (NSF) under grant no. DMR-2104397. N.N. was supported by JST CREST grant number JPMJCR1874 and JSPS KAKENHI grant number 18H03676. A portion of this work was performed on the Steady High Magnetic Field Facilities, High Magnetic Field Laboratory, CAS. We acknowledge the Users with Excellence Project of Hefei Science Center CAS, 2021HSC-UE007. The high-field XMCD measurement was performed under proposal no. 2019A1344 at SPring-8 BL25SU. This research used resources of the Advanced Light Source, a US DOE Office of Science User Facility under contract no. DE-AC02-05CH11231. We acknowledge the High-Performance Computing Modernization Program (HPCMP) of the DOD for providing computational resources that have contributed to the research results reported herein.

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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@article{c2e510e577d047dd8e9437bb8044eae8,

title = "A correlated ferromagnetic polar metal by design",

abstract = "Polar metals have recently garnered increasing interest because of their promising functionalities. Here we report the experimental realization of an intrinsic coexisting ferromagnetism, polar distortion and metallicity in quasi-two-dimensional Ca3Co3O8. This material crystallizes with alternating stacking of oxygen tetrahedral CoO4 monolayers and octahedral CoO6 bilayers. The ferromagnetic metallic state is confined within the quasi-two-dimensional CoO6 layers, and the broken inversion symmetry arises simultaneously from the Co displacements. The breaking of both spatial-inversion and time-reversal symmetries, along with their strong coupling, gives rise to an intrinsic magnetochiral anisotropy with exotic magnetic field-free non-reciprocal electrical resistivity. An extraordinarily robust topological Hall effect persists over a broad temperature–magnetic field phase space, arising from dipole-induced Rashba spin–orbit coupling. Our work not only provides a rich platform to explore the coupling between polarity and magnetism in a metallic system, with extensive potential applications, but also defines a novel design strategy to access exotic correlated electronic states.",

author = "Jianbing Zhang and Shengchun Shen and Danilo Puggioni and Meng Wang and Haozhi Sha and Xueli Xu and Yingjie Lyu and Huining Peng and Wandong Xing and Walters, {Lauren N.} and Linhan Liu and Yujia Wang and De Hou and Chuanying Xi and Li Pi and Hiroaki Ishizuka and Yoshinori Kotani and Motoi Kimata and Hiroyuki Nojiri and Tetsuya Nakamura and Tian Liang and Di Yi and Tianxiang Nan and Jiadong Zang and Zhigao Sheng and Qing He and Shuyun Zhou and Naoto Nagaosa and Nan, {Ce Wen} and Yoshinori Tokura and Rong Yu and Rondinelli, {James M.} and Pu Yu",

note = "Publisher Copyright: {\textcopyright} The Author(s), under exclusive licence to Springer Nature Limited 2024.",

year = "2024",

month = jul,

doi = "10.1038/s41563-024-01856-6",

language = "English (US)",

volume = "23",

pages = "912--919",

journal = "Nature materials",

issn = "1476-1122",

publisher = "Nature Publishing Group",

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Zhang, J, Shen, S, Puggioni, D, Wang, M, Sha, H, Xu, X, Lyu, Y, Peng, H, Xing, W, Walters, LN, Liu, L, Wang, Y, Hou, D, Xi, C, Pi, L, Ishizuka, H, Kotani, Y, Kimata, M, Nojiri, H, Nakamura, T, Liang, T, Yi, D, Nan, T, Zang, J, Sheng, Z, He, Q, Zhou, S, Nagaosa, N, Nan, CW, Tokura, Y, Yu, R, Rondinelli, JM & Yu, P 2024, 'A correlated ferromagnetic polar metal by design', Nature materials, vol. 23, no. 7, pp. 912-919. https://doi.org/10.1038/s41563-024-01856-6

TY - JOUR

T1 - A correlated ferromagnetic polar metal by design

AU - Zhang, Jianbing

AU - Shen, Shengchun

AU - Puggioni, Danilo

AU - Wang, Meng

AU - Sha, Haozhi

AU - Xu, Xueli

AU - Lyu, Yingjie

AU - Peng, Huining

AU - Xing, Wandong

AU - Walters, Lauren N.

AU - Liu, Linhan

AU - Wang, Yujia

AU - Hou, De

AU - Xi, Chuanying

AU - Pi, Li

AU - Ishizuka, Hiroaki

AU - Kotani, Yoshinori

AU - Kimata, Motoi

AU - Nojiri, Hiroyuki

AU - Nakamura, Tetsuya

AU - Liang, Tian

AU - Yi, Di

AU - Nan, Tianxiang

AU - Zang, Jiadong

AU - Sheng, Zhigao

AU - He, Qing

AU - Zhou, Shuyun

AU - Nagaosa, Naoto

AU - Nan, Ce Wen

AU - Tokura, Yoshinori

AU - Yu, Rong

AU - Rondinelli, James M.

AU - Yu, Pu

PY - 2024/7

Y1 - 2024/7

N2 - Polar metals have recently garnered increasing interest because of their promising functionalities. Here we report the experimental realization of an intrinsic coexisting ferromagnetism, polar distortion and metallicity in quasi-two-dimensional Ca3Co3O8. This material crystallizes with alternating stacking of oxygen tetrahedral CoO4 monolayers and octahedral CoO6 bilayers. The ferromagnetic metallic state is confined within the quasi-two-dimensional CoO6 layers, and the broken inversion symmetry arises simultaneously from the Co displacements. The breaking of both spatial-inversion and time-reversal symmetries, along with their strong coupling, gives rise to an intrinsic magnetochiral anisotropy with exotic magnetic field-free non-reciprocal electrical resistivity. An extraordinarily robust topological Hall effect persists over a broad temperature–magnetic field phase space, arising from dipole-induced Rashba spin–orbit coupling. Our work not only provides a rich platform to explore the coupling between polarity and magnetism in a metallic system, with extensive potential applications, but also defines a novel design strategy to access exotic correlated electronic states.

AB - Polar metals have recently garnered increasing interest because of their promising functionalities. Here we report the experimental realization of an intrinsic coexisting ferromagnetism, polar distortion and metallicity in quasi-two-dimensional Ca3Co3O8. This material crystallizes with alternating stacking of oxygen tetrahedral CoO4 monolayers and octahedral CoO6 bilayers. The ferromagnetic metallic state is confined within the quasi-two-dimensional CoO6 layers, and the broken inversion symmetry arises simultaneously from the Co displacements. The breaking of both spatial-inversion and time-reversal symmetries, along with their strong coupling, gives rise to an intrinsic magnetochiral anisotropy with exotic magnetic field-free non-reciprocal electrical resistivity. An extraordinarily robust topological Hall effect persists over a broad temperature–magnetic field phase space, arising from dipole-induced Rashba spin–orbit coupling. Our work not only provides a rich platform to explore the coupling between polarity and magnetism in a metallic system, with extensive potential applications, but also defines a novel design strategy to access exotic correlated electronic states.

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JO - Nature materials

JF - Nature materials

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ER -

A correlated ferromagnetic polar metal by design

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