| Voltage-Controlled Dzyaloshinskii-Moriya Interaction Torque Switching of Perpendicular Magnetization | |
Yu, Dongxing1,3; Ga, Yonglong3; Liang, Jinghua3; Jia, CL(贾成龙)2 ; Yang, Hongxin1,3 | |
| 2023-02-03 | |
| Source Publication | PHYSICAL REVIEW LETTERS Impact Factor & Quartile |
| ISSN | 0031-9007 |
| Volume | 130Issue:5 |
| Abstract | Magnetization switching is the most important operation in spintronic devices. In modern nonvolatile magnetic random-access memory (MRAM), it is usually realized by spin-transfer torque (STT) or spin-orbit torque (SOT). However, both STT and SOT MRAM require current to drive magnetization switching, which will cause Joule heating. Here, we report an alternative mechanism, Dzyaloshinskii-Moriya interaction (DMI) torque, that can realize magnetization switching fully controlled by voltage pulses. We find that a consequential voltage-controlled reversal of DMI chirality in multiferroics can lead to continued expansion of a skyrmion thanks to the DMI torque. Enough DMI torque will eventually make the skyrmion burst into a quasiuniform ferromagnetic state with reversed magnetization, thus realizing the switching of a perpendicular magnet. The discovery is demonstrated in two-dimensional multiferroics, CuCrP2Se6 and CrN, using first-principles calculations and micromagnetic simulations. As an example, we applied the DMI torque for simulating leaky-integrate-fire functionality of biological neurons. Our discovery of DMI torque switching of perpendicular magnetization provides tremendous potential toward magnetic-field-free and current-free spintronic devices, and neuromorphic computing as well. © 2023 American Physical Society. |
| Keyword | Chromium compounds Copper compounds Magnetization MRAM devices Selenium compounds 'current Dzyaloshinskii-Moriya interaction Magnetic random access memory Magnetization switching Multiferroics Perpendicular magnetization Spin orbits Spin transfer torque Spintronics device Voltage-controlled |
| Publisher | American Physical Society |
| DOI | 10.1103/PhysRevLett.130.056701 |
| Indexed By | EI |
| Language | 英语 |
| EI Accession Number | 20230713573456 |
| EI Keywords | Torque |
| EI Classification Number | 701.2 Magnetism: Basic Concepts and Phenomena ; 722.1 Data Storage, Equipment and Techniques ; 931.2 Physical Properties of Gases, Liquids and Solids |
| Original Document Type | Journal article (JA) |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/498401 |
| Collection | 物理科学与技术学院 |
| Affiliation | 1.National Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing; 210093, China; 2.Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou Center for Theoretical Physics, Lanzhou University, Lanzhou; 730000, China; 3.Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo; 315201, China |
| Recommended Citation GB/T 7714 | Yu, Dongxing,Ga, Yonglong,Liang, Jinghua,et al. Voltage-Controlled Dzyaloshinskii-Moriya Interaction Torque Switching of Perpendicular Magnetization[J]. PHYSICAL REVIEW LETTERS,2023,130(5). |
| APA | Yu, Dongxing,Ga, Yonglong,Liang, Jinghua,Jia, Chenglong,&Yang, Hongxin.(2023).Voltage-Controlled Dzyaloshinskii-Moriya Interaction Torque Switching of Perpendicular Magnetization.PHYSICAL REVIEW LETTERS,130(5). |
| MLA | Yu, Dongxing,et al."Voltage-Controlled Dzyaloshinskii-Moriya Interaction Torque Switching of Perpendicular Magnetization".PHYSICAL REVIEW LETTERS 130.5(2023). |
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