1. Multiferroic Magnon Spin-Torque Based Reconfigurable Logic-In-Memory
- Author
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Chai, Yahong, Liang, Yuhan, Xiao, Cancheng, Wang, Yue, Li, Bo, Jiang, Dingsong, Pal, Pratap, Tang, Yongjian, Chen, Hetian, Zhang, Yuejie, Skowroński, Witold, Zhang, Qinghua, Gu, Lin, Ma, Jing, Yu, Pu, Tang, Jianshi, Lin, Yuan-Hua, Yi, Di, Ralph, Daniel C., Eom, Chang-Beom, Wu, Huaqiang, and Nan, Tianxiang
- Subjects
Physics - Applied Physics ,Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
Magnons, bosonic quasiparticles carrying angular momentum, can flow through insulators for information transmission with minimal power dissipation. However, it remains challenging to develop a magnon-based logic due to the lack of efficient electrical manipulation of magnon transport. Here we present a magnon logic-in-memory device in a spin-source/multiferroic/ferromagnet structure, where multiferroic magnon modes can be electrically excited and controlled. In this device, magnon information is encoded to ferromagnetic bits by the magnon-mediated spin torque. We show that the ferroelectric polarization can electrically modulate the magnon spin-torque by controlling the non-collinear antiferromagnetic structure in multiferroic bismuth ferrite thin films with coupled antiferromagnetic and ferroelectric orders. By manipulating the two coupled non-volatile state variables (ferroelectric polarization and magnetization), we further demonstrate reconfigurable logic-in-memory operations in a single device. Our findings highlight the potential of multiferroics for controlling magnon information transport and offer a pathway towards room-temperature voltage-controlled, low-power, scalable magnonics for in-memory computing.
- Published
- 2023