Electrical manipulation of Antiferromagnetic State in Non-centrosymmetric Systems
Project/Area Number |
21K13873
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
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Research Institution | Institute of Physical and Chemical Research |
Principal Investigator |
ヌイェン カーン 国立研究開発法人理化学研究所, 創発物性科学研究センター, 研究員 (50775608)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Project Status |
Granted (Fiscal Year 2022)
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Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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Keywords | Magnetism / Antiferromagnet / Symmetry Breaking / Nonreciprocal transport |
Outline of Research at the Start |
Antiferromagnet appears as a promising candidate toward realizing denser, faster, and more robust future spin-electronic devices. We focus on develop a simple and efficient method using electric current to manipulate, “read and write”, antiferromagnetic states in a new class of material.
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Outline of Annual Research Achievements |
Antiferromagnetic materials recently appear as a promising candidate toward realizing denser, faster, and more robust future spin-electronic devices, despite the difficulty to control. In this work, we aim to develop and investigate a new class of antiferromagnetic materials, transition metal intercalated van der Waals materials with non-coplanar spin texture. Utilizing the unique feature of simultaneous symmetry breaking in this material, we would like to pursuit 2 targets: (i) Non-reciprocal transport phenomena in chiral antiferromagnet with broken time-reversal symmetry and (ii) Manipulation of antiferromagnetic states with electric current. Successful observation of these phenomene may pave a new way toward establishing an effective method for reading out and writing AFM states.
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Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
At the current stage, the large single crystal was succesfully grown and characterized the non-coplanar magnetic structure. The sample also exhibits large anomalous Hall effect accompanied with an odd-parity linear magnetoresistance (MR) arises from antiferromagnetic order with broken time reversal symmetry. The non-reciprocal MR and spontaneous Hall resistivity exhibit similar scaling behavior upon temperature variation and field cooling, which evidences the correlation between antiferromagnetic order. In order to observe higher order non-reciprocal transport property, we fabricated the micro-device using focused ion beam technique. By reduced the sample dimension and contact condition, we observed the electrical magnetochiral effect, as well as proceeded to the switching magnetic state using electric current.
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Strategy for Future Research Activity |
As for the future plan, we are currently summarizing the results into manuscript. In addition, as for the purpose of switching magnetic state, reversal of AFM states via reading out the Hall resistivity has been achieved, the controllable / deterministic switching is highly desired because of the the random nucleation of magnetic domain due to heating generated via application of current pulse. To overcome this issue, improving the device configuration is required to reduce the impact of undesired heating. In addition, because this class of material allows to exfoliate into thin flake, investigation the evolution of magnetic property upon reducing sample dimention is also one of interesting issues for future study.
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Report
(2 results)
Research Products
(9 results)
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[Journal Article] Spontaneous topological Hall effect induced by non-coplanar antiferromagnetic order in intercalated van der Waals materials2023
Author(s)
H. Takagi, R. Takagi, S. Minami, T. Nomoto, K. Ohishi, M.-T. Suzuki, Y. Yanagi, M. Hirayama, N. D. Khanh, K. Karube, H. Saito, D. Hashizume, R. Kiyanagi, Y. Tokura, R. Arita, T. Nakajima, S. Seki
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Journal Title
Nature Physics
Volume: Advance online publications
Issue: 7
Pages: 961-968
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Quantum oscillations in the centrosymmetric skyrmion-hosting magnet GdRu2Si22023
Author(s)
N. Matsuyama, T. Nomura, S. Imajo, T. Nomoto, R. Arita, K. Sudo, M. Kimata, N. D. Khanh, R. Takagi, Y. Tokura, S. Seki, K. Kindo, Y. Kohama
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Journal Title
Physical Review B
Volume: 107
Issue: 10
Pages: 104421-104421
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Zoology of multiple-Q spin textures in centrosymmetric tetragonal magnet GdRu2Si22022
Author(s)
Nguyen Duy Khanh, Taro Nakajima, Satoru Hayami, Shang Gao, Yuichi Yamasaki, Hajime Sagayama, Hironori Nakao, Rina Takagi, Yukitoshi Motome, Yoshinori Tokura, Taka-hisa Arima, Shinichiro Seki
Organizer
29th International Conference on Low Temperature Physics
Related Report
Int'l Joint Research
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[Presentation] Multiple-step topological phase transitions in a centrosymmetric tetragonal magnet GdRu2Ge22022
Author(s)
Haruto Yoshimochi, Rina Takagi, Satoru Hayami, Jiwon Ju, Nguyen Duy Khanh, Hikaru Saito, Hajime Sagayama, Hironori Nakao, Taka-hisa Arima, Yoshinori Tokura, Taro Nakajima, Shinichiro Seki
Organizer
29th International Conference on Low Temperature Physics
Related Report
Int'l Joint Research
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