Piezomagnetic switching of the anomalous Hall effect in an antiferromagnet at room temperature

M. Ikhlas; S. Dasgupta; F. Theuss; T. Higo; Shunichiro Kittaka; B. J. Ramshaw; O. Tchernyshyov; C. W. Hicks; S. Nakatsuji

doi:10.1038/s41567-022-01645-5

Piezomagnetic switching of the anomalous Hall effect in an antiferromagnet at room temperature

M. Ikhlas
, S. Dasgupta
, F. Theuss
, T. Higo
, Shunichiro Kittaka
, B. J. Ramshaw
, O. Tchernyshyov
, C. W. Hicks
, S. Nakatsuji^*

^*Corresponding author for this work

Physics and Astronomy

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

Abstract

Piezomagnetism couples strain linearly to magnetic order, implying that it can produce and control magnetization. However, unlike magnetostriction, which couples magnetization quadratically to strain, it enables bidirectional control of a net magnetic moment. If this effect becomes large at room temperature, it may be technologically relevant, similar to its electric analogue, piezoelectricity. However, current studies of the piezomagnetic effect have been primarily restricted to antiferromagnetic insulators at cryogenic temperatures. Here we report the observation of large piezomagnetism in the antiferromagnetic Weyl semimetal Mn3Sn at room temperature. This material is known for its nearly magnetization-free anomalous Hall effect. We find that a small uniaxial strain on the order of 0.1% can control both the sign and size of the anomalous Hall effect. Our experiment and theory show that the piezomagnetism can control the anomalous Hall effect, which will be useful for spintronics applications.

Original language	English
Pages (from-to)	1086-1093
Number of pages	8
Journal	Nature Physics
Volume	18
Issue number	9
Early online date	18 Aug 2022
DOIs	https://doi.org/10.1038/s41567-022-01645-5
Publication status	Published - Sept 2022

Bibliographical note

Acknowledgements:
The work at the Institute for Quantum Matter, an Energy Frontier Research Center, was funded by the DOE Office of Science, Basic Energy Sciences under award no. DE-SC0019331. This work was partially supported by JST-Mirai Program (JPMJMI20A1), JST-CREST (JPMJCR18T3), JST-PRESTO (JPMJPR20L7), Japan Science and Technology Agency, Grants-in-Aids for Scientific Research on Innovative Areas (15H05882, 15H05883 and 15K21732) from the Ministry of Education, Culture, Sports, Science and Technology of Japan, and Grants-in-Aid for Scientific Research (19H00650). S.N. acknowledges support from the CIFAR as a Fellow of the CIFAR Quantum Materials Research Program. The use of the facilities of the Materials Design and Characterization Laboratory at the Institute for Solid State Physics, The University of Tokyo, as well as the Cryogenic Research Center, The University of Tokyo, is gratefully acknowledged. M.I. is supported by a JSPS Research Fellowship for Young Scientists (DC1). S.D. is supported by funding from the Max Planck-UBC-UTokyo Center for Quantum Materials, the Canada First Research Excellence Fund, Quantum Materials and Future Technologies Program, and the Japan Society for the Promotion of Science KAKENHI grant no. JP19H01808. C.W.H. acknowledges support from the Deutsche Forschungsgemeinschaft through SFB 1143 (project ID 247310070) and the Max Planck Society. The identification of any commercial product or tradename does not imply endorsement or recommendation by the National Institute of Standards and Technology.

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@article{78b0ffcfff734f2397be4349a9607fe1,

title = "Piezomagnetic switching of the anomalous Hall effect in an antiferromagnet at room temperature",

abstract = "Piezomagnetism couples strain linearly to magnetic order, implying that it can produce and control magnetization. However, unlike magnetostriction, which couples magnetization quadratically to strain, it enables bidirectional control of a net magnetic moment. If this effect becomes large at room temperature, it may be technologically relevant, similar to its electric analogue, piezoelectricity. However, current studies of the piezomagnetic effect have been primarily restricted to antiferromagnetic insulators at cryogenic temperatures. Here we report the observation of large piezomagnetism in the antiferromagnetic Weyl semimetal Mn3Sn at room temperature. This material is known for its nearly magnetization-free anomalous Hall effect. We find that a small uniaxial strain on the order of 0.1\% can control both the sign and size of the anomalous Hall effect. Our experiment and theory show that the piezomagnetism can control the anomalous Hall effect, which will be useful for spintronics applications.",

author = "M. Ikhlas and S. Dasgupta and F. Theuss and T. Higo and Shunichiro Kittaka and Ramshaw, \{B. J.\} and O. Tchernyshyov and Hicks, \{C. W.\} and S. Nakatsuji",

note = "Acknowledgements: The work at the Institute for Quantum Matter, an Energy Frontier Research Center, was funded by the DOE Office of Science, Basic Energy Sciences under award no. DE-SC0019331. This work was partially supported by JST-Mirai Program (JPMJMI20A1), JST-CREST (JPMJCR18T3), JST-PRESTO (JPMJPR20L7), Japan Science and Technology Agency, Grants-in-Aids for Scientific Research on Innovative Areas (15H05882, 15H05883 and 15K21732) from the Ministry of Education, Culture, Sports, Science and Technology of Japan, and Grants-in-Aid for Scientific Research (19H00650). S.N. acknowledges support from the CIFAR as a Fellow of the CIFAR Quantum Materials Research Program. The use of the facilities of the Materials Design and Characterization Laboratory at the Institute for Solid State Physics, The University of Tokyo, as well as the Cryogenic Research Center, The University of Tokyo, is gratefully acknowledged. M.I. is supported by a JSPS Research Fellowship for Young Scientists (DC1). S.D. is supported by funding from the Max Planck-UBC-UTokyo Center for Quantum Materials, the Canada First Research Excellence Fund, Quantum Materials and Future Technologies Program, and the Japan Society for the Promotion of Science KAKENHI grant no. JP19H01808. C.W.H. acknowledges support from the Deutsche Forschungsgemeinschaft through SFB 1143 (project ID 247310070) and the Max Planck Society. The identification of any commercial product or tradename does not imply endorsement or recommendation by the National Institute of Standards and Technology.",

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AU - Ikhlas, M.

AU - Dasgupta, S.

AU - Theuss, F.

AU - Higo, T.

AU - Kittaka, Shunichiro

AU - Ramshaw, B. J.

AU - Tchernyshyov, O.

AU - Hicks, C. W.

AU - Nakatsuji, S.

N1 - Acknowledgements: The work at the Institute for Quantum Matter, an Energy Frontier Research Center, was funded by the DOE Office of Science, Basic Energy Sciences under award no. DE-SC0019331. This work was partially supported by JST-Mirai Program (JPMJMI20A1), JST-CREST (JPMJCR18T3), JST-PRESTO (JPMJPR20L7), Japan Science and Technology Agency, Grants-in-Aids for Scientific Research on Innovative Areas (15H05882, 15H05883 and 15K21732) from the Ministry of Education, Culture, Sports, Science and Technology of Japan, and Grants-in-Aid for Scientific Research (19H00650). S.N. acknowledges support from the CIFAR as a Fellow of the CIFAR Quantum Materials Research Program. The use of the facilities of the Materials Design and Characterization Laboratory at the Institute for Solid State Physics, The University of Tokyo, as well as the Cryogenic Research Center, The University of Tokyo, is gratefully acknowledged. M.I. is supported by a JSPS Research Fellowship for Young Scientists (DC1). S.D. is supported by funding from the Max Planck-UBC-UTokyo Center for Quantum Materials, the Canada First Research Excellence Fund, Quantum Materials and Future Technologies Program, and the Japan Society for the Promotion of Science KAKENHI grant no. JP19H01808. C.W.H. acknowledges support from the Deutsche Forschungsgemeinschaft through SFB 1143 (project ID 247310070) and the Max Planck Society. The identification of any commercial product or tradename does not imply endorsement or recommendation by the National Institute of Standards and Technology.

PY - 2022/9

Y1 - 2022/9

N2 - Piezomagnetism couples strain linearly to magnetic order, implying that it can produce and control magnetization. However, unlike magnetostriction, which couples magnetization quadratically to strain, it enables bidirectional control of a net magnetic moment. If this effect becomes large at room temperature, it may be technologically relevant, similar to its electric analogue, piezoelectricity. However, current studies of the piezomagnetic effect have been primarily restricted to antiferromagnetic insulators at cryogenic temperatures. Here we report the observation of large piezomagnetism in the antiferromagnetic Weyl semimetal Mn3Sn at room temperature. This material is known for its nearly magnetization-free anomalous Hall effect. We find that a small uniaxial strain on the order of 0.1% can control both the sign and size of the anomalous Hall effect. Our experiment and theory show that the piezomagnetism can control the anomalous Hall effect, which will be useful for spintronics applications.

AB - Piezomagnetism couples strain linearly to magnetic order, implying that it can produce and control magnetization. However, unlike magnetostriction, which couples magnetization quadratically to strain, it enables bidirectional control of a net magnetic moment. If this effect becomes large at room temperature, it may be technologically relevant, similar to its electric analogue, piezoelectricity. However, current studies of the piezomagnetic effect have been primarily restricted to antiferromagnetic insulators at cryogenic temperatures. Here we report the observation of large piezomagnetism in the antiferromagnetic Weyl semimetal Mn3Sn at room temperature. This material is known for its nearly magnetization-free anomalous Hall effect. We find that a small uniaxial strain on the order of 0.1% can control both the sign and size of the anomalous Hall effect. Our experiment and theory show that the piezomagnetism can control the anomalous Hall effect, which will be useful for spintronics applications.

U2 - 10.1038/s41567-022-01645-5

DO - 10.1038/s41567-022-01645-5

M3 - Article

SN - 1745-2473

VL - 18

SP - 1086

EP - 1093

JO - Nature Physics

JF - Nature Physics

IS - 9

ER -

Piezomagnetic switching of the anomalous Hall effect in an antiferromagnet at room temperature

Abstract

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