학술논문
Multiferroic Magnon Spin-Torque Based Reconfigurable Logic-In-Memory
Document Type
Working Paper
Author
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; Nan, Tianxiang
Source
Subject
Language
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.