Spin Logic Devices via Electric Field Controlled Magnetization Reversal by Spin-Orbit Torque

Yang, Meiyin; Deng, Yongcheng; Wu, Zhenhua; Cai, Kaiming; Edmonds, Kevin William; Li, Yucai; Sheng, Yu; Wang, Sumei; Cui, Yan; Luo, Jun; Ji, Yang; Zheng, Hou-Zhi; Wang, Kaiyou

Abstract

We describe a spin logic device with controllable magnetization switching of perpendicularly magnetized ferromagnet/heavy metal structures on a ferroelectric (1-x)[Pb(Mg 1/3 Nb 2/3 )O 3 ]-x[PbTiO 3 ] (PMN-PT) substrate using current-induced spin-orbit torque. The devices were operated without an external magnetic field and controlled by voltages as low as 10 V applied across the PMN-PT substrate, which is much lower compared with the previous reports (500 V). The deterministic switching with smaller voltage was realized from the virgin state of the PMN-PT. The ferroelectric simulation shows the unsaturated minor loop exhibits obvious asymmetries in the polarizations. Larger polarization can be induced from the initial ferroelectric state, while it is difficult for opposite polarization. The XNOR, AND, NAND and NOT logic functions were demonstrated by the deterministic magnetization switching from the interaction between the spin-orbit torque and electric field at the PMN-PT/Pt interface. The nonvolatile spin logic scheme in this letter is simple, scalable and programmable, which are favorable in the logic-in-memory design with low energy consumption.

Citation

Yang, M., Deng, Y., Wu, Z., Cai, K., Edmonds, K. W., Li, Y., …Wang, K. (2019). Spin Logic Devices via Electric Field Controlled Magnetization Reversal by Spin-Orbit Torque. IEEE Electron Device Letters, 40(9), 1554-1557. https://doi.org/10.1109/led.2019.2932479

• Journal Article Type: Article
• Acceptance Date: Jul 26, 2019
• Online Publication Date: Aug 1, 2019
• Publication Date: 2019-09
• Deposit Date: Oct 24, 2019
• Publicly Available Date: Oct 25, 2019
• Journal: IEEE Electron Device Letters
• Print ISSN: 0741-3106
• Electronic ISSN: 1558-0563
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 40
• Issue: 9
• Pages: 1554-1557
• DOI: https://doi.org/10.1109/led.2019.2932479
• Keywords: Electrical and Electronic Engineering; Electronic, Optical and Magnetic Materials
• Public URL: https://nottingham-repository.worktribe.com/output/2958534
• Publisher URL: https://ieeexplore.ieee.org/document/8784290