| Voltage-Controlled Dzyaloshinskii-Moriya Interaction Torque Switching of Perpendicular Magnetization | |
| Yu, Dongxing1,4; Ga, Yonglong4; Liang, Jinghua4; Jia, Chenglong2,3; Yang, Hongxin1,4 | |
| 2023-02-02 | |
| 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 spinorbit 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. |
| Publisher | AMER PHYSICAL SOC |
| DOI | 10.1103/PhysRevLett.130.056701 |
| Indexed By | SCIE |
| Language | 英语 |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| WOS ID | WOS:000931575600004 |
| Original Document Type | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/499216 |
| Collection | 兰州大学 |
| Corresponding Author | Jia, Chenglong |
| Affiliation | 1.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China; 2.Lanzhou Univ, Key Lab Magnetism & Magnet Mat MOE, Lanzhou 730000, Peoples R China; 3.Lanzhou Univ, Lanzhou Ctr Theoret Phys, Lanzhou 730000, Peoples R China; 4.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R 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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