中国物理B ›› 2025, Vol. 34 ›› Issue (6): 67504-067504.doi: 10.1088/1674-1056/adc6f5

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A design for an antiferromagnetic material based on self-assembly for information storage

Si-Yan Gao(高思妍)1, Yi-Feng Zheng(郑益峰)2, Shu-Qiang He(何述强)3, Haiping Fang(方海平)3,†, and Yue-Yu Zhang(张越宇)2,‡   

  1. 1 School of Physics and School of Material Science and Engineering, East China University of Science and Technology, Shanghai 200237, China;
    2 Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China;
    3 School of Physics, East China University of Science and Technology, Shanghai 200237, China
  • 收稿日期:2025-01-07 修回日期:2025-03-18 接受日期:2025-03-31 出版日期:2025-05-16 发布日期:2025-06-06
  • 通讯作者: Haiping Fang, Yue-Yu Zhang E-mail:fanghaiping@sinap.ac.cn;zhangyy@wiucas.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12435001, 12304006, and 12404265), the Natural Science Foundation of Shanghai, China (Grant No. 23JC1401400), the Fundamental Research Funds for the Central Universities of East China University, the Natural Science Foundation of WIUCAS (Grant No. WIUCASQD2023004), and the Natural Science Foundation of Wenzhou (Grant No. L2023005).

A design for an antiferromagnetic material based on self-assembly for information storage

Si-Yan Gao(高思妍)1, Yi-Feng Zheng(郑益峰)2, Shu-Qiang He(何述强)3, Haiping Fang(方海平)3,†, and Yue-Yu Zhang(张越宇)2,‡   

  1. 1 School of Physics and School of Material Science and Engineering, East China University of Science and Technology, Shanghai 200237, China;
    2 Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China;
    3 School of Physics, East China University of Science and Technology, Shanghai 200237, China
  • Received:2025-01-07 Revised:2025-03-18 Accepted:2025-03-31 Online:2025-05-16 Published:2025-06-06
  • Contact: Haiping Fang, Yue-Yu Zhang E-mail:fanghaiping@sinap.ac.cn;zhangyy@wiucas.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12435001, 12304006, and 12404265), the Natural Science Foundation of Shanghai, China (Grant No. 23JC1401400), the Fundamental Research Funds for the Central Universities of East China University, the Natural Science Foundation of WIUCAS (Grant No. WIUCASQD2023004), and the Natural Science Foundation of Wenzhou (Grant No. L2023005).

摘要: Antiferromagnetic (AFM) spintronics have sparked extensive research interest in the field of information storage due to the considerable advantages offered by antiferromagnets, including non-volatile data storage, higher storage density, and accelerating data processing. However, the manipulation and detection of internal AFM order in antiferromagnets hinders their applications in spintronic devices. Here, we proposed a design idea for an AFM material that is self-assembled from one-dimensional (1D) ferromagnetic (FM) chains. To validate this idea, we screened a two-dimensional (2D) self-assembled CrBr$_{2}$ antiferromagnet of an AFM semiconductor from a large amount of data. This 2D CrBr$_{2}$ antiferromagnet is composed of 1D FM CrBr$_{2}$ chains that are arranged in a staggered and parallel configuration. In this type of antiferromagnet, the write-data operation of information is achieved in 1D FM chains, followed by a self-assembly process driving the assembly of 1D FM chains into an antiferromagnet. These constituent 1D FM chains become decoupled by external perturbations, such as heat, pressure, strain, etc., thereby realizing the read-data operation of information. We anticipate that this antiferromagnet, composed of 1D FM chains, can be realized not only in the 1D to 2D system, but also is expected to expand to 2D to three-dimensional (3D) system, and even 1D to 3D system.

关键词: information storage, self-assembly, 2D antiferromagnet, 1D FM chains

Abstract: Antiferromagnetic (AFM) spintronics have sparked extensive research interest in the field of information storage due to the considerable advantages offered by antiferromagnets, including non-volatile data storage, higher storage density, and accelerating data processing. However, the manipulation and detection of internal AFM order in antiferromagnets hinders their applications in spintronic devices. Here, we proposed a design idea for an AFM material that is self-assembled from one-dimensional (1D) ferromagnetic (FM) chains. To validate this idea, we screened a two-dimensional (2D) self-assembled CrBr$_{2}$ antiferromagnet of an AFM semiconductor from a large amount of data. This 2D CrBr$_{2}$ antiferromagnet is composed of 1D FM CrBr$_{2}$ chains that are arranged in a staggered and parallel configuration. In this type of antiferromagnet, the write-data operation of information is achieved in 1D FM chains, followed by a self-assembly process driving the assembly of 1D FM chains into an antiferromagnet. These constituent 1D FM chains become decoupled by external perturbations, such as heat, pressure, strain, etc., thereby realizing the read-data operation of information. We anticipate that this antiferromagnet, composed of 1D FM chains, can be realized not only in the 1D to 2D system, but also is expected to expand to 2D to three-dimensional (3D) system, and even 1D to 3D system.

Key words: information storage, self-assembly, 2D antiferromagnet, 1D FM chains

中图分类号:  (Antiferromagnetics)

  • 75.50.Ee
81.16.Dn (Self-assembly) 72.80.Ga (Transition-metal compounds) 71.15.Mb (Density functional theory, local density approximation, gradient and other corrections) 71.20.-b (Electron density of states and band structure of crystalline solids)