Gate Tunable Labyrinth Domain Structures in a van der Waals Itinerant Ferromagnet Cr7Te8

孟奎 ¹李泽亚 ¹申艺成 ¹毕翔宇 ¹饶俊豪 ¹钱玉婷 ¹高战胜 ²陈朋 ¹邱彩玉 ¹秦峰 ¹吴金雄 ³罗锋 ³黄俊伟 ¹袁洪涛¹

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作者信息

1. National Laboratory of Solid State Microstructures,Jiangsu Key Laboratory of Artificial Functional Materials,College of Engineering and Applied Sciences,and Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210000,China
2. Center for the Physics of Low-Dimensional Materials,Henan Joint International Research Laboratory of New Energy Materials and Devices,School of Physics and Electronics,Henan University,Kaifeng 475004,China
3. Tianjin Key Lab for Rare Earth Materials and Applications,Center for Rare Earth and Inorganic Functional Materials,Smart Sensor Interdisciplinary Science Center,School of Materials Science and Engineering,Nankai University,Tianjin 300350,China
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Abstract

Manipulating magnetic domain structure plays a key role in advanced spintronics devices.Theoretical ra-tionale is that the labyrinthine domain structure,normally appearing in ferromagnetic thin films with strong magnetic anisotropy,shows a great potential to increase data storage density for designing magnetic nonvolatile memory and logic devices.However,an electrical control of labyrinthine domain structure remains elusive.Here,we demonstrate the gate-driven evolution of labyrinthine domain structures in an itinerant ferromagnet Cr7Te8.By combining electric transport measurements and micromagnetic finite difference simulations,we find that the hysteresis loop of anomalous Hall effect in Cr7Te8 samples shows distinct features corresponding to the generation of labyrinthine domain structures.The labyrinthine domain structures are found to be electrically tunable via Li-electrolyte gating,and such gate-driven evolution in Cr7Te8 originates from the reduction of the magnetic anisotropic energy with gating,revealed by our micromagnetic simulations.Our results on the gate control of anomalous Hall effect in an itinerant magnetic material provide an opportunity to understand the formation and evolution of labyrinthine domain structures,paving a new route towards electric-field driven spintronics.

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基金项目

National Natural Science Foundation of China(92365203)

National Natural Science Foundation of China(52072168)

National Natural Science Foundation of China(51861145201)

National Natural Science Foundation of China(52302180)

National Natural Science Foundation of China(12204232)

National Key Research and Development Program of China(2021YFA1202901)

Science and Technology Development Project of Henan Province(242102230140)

China Postdoctoral Science Foundation(2024M750775)

出版年

2024

中国物理快报(英文版)

中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDCSCDEI

影响因子：0.515

ISSN：0256-307X

参考文献量40

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