Voltage control of multiferroic magnon torque for reconfigurable logic-in-memory

Yahong Chai, Yuhan Liang, Cancheng Xiao, Yue Wang, Bo Li, Dingsong Jiang, Pratap Pal, Yongjian Tang, Hetian Chen, Yuejie Zhang, Hao Bai, Teng Xu, Wanjun Jiang, Witold Skowroński, Qinghua Zhang, Lin Gu, Jing Ma, Pu Yu, Jianshi Tang, Yuan-Hua Lin (), Di Yi (), Daniel C. Ralph, Chang-Beom Eom, Huaqiang Wu and Tianxiang Nan ()
Additional contact information
Yahong Chai: Tsinghua University
Yuhan Liang: Tsinghua University
Cancheng Xiao: Tsinghua University
Yue Wang: Tsinghua University
Bo Li: Tsinghua University
Dingsong Jiang: Tsinghua University
Pratap Pal: University of Wisconsin-Madison
Yongjian Tang: Cornell University
Hetian Chen: Tsinghua University
Yuejie Zhang: Tsinghua University
Hao Bai: Tsinghua University
Teng Xu: Tsinghua University
Wanjun Jiang: Tsinghua University
Witold Skowroński: AGH University of Science and Technology
Qinghua Zhang: Chinese Academy of Sciences
Lin Gu: Tsinghua University
Jing Ma: Tsinghua University
Pu Yu: Tsinghua University
Jianshi Tang: Tsinghua University
Yuan-Hua Lin: Tsinghua University
Di Yi: Tsinghua University
Daniel C. Ralph: Cornell University
Chang-Beom Eom: University of Wisconsin-Madison
Huaqiang Wu: Tsinghua University
Tianxiang Nan: Tsinghua University

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: 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 show the electric excitation and control of multiferroic magnon modes in a spin-source/multiferroic/ferromagnet structure. We demonstrate that the ferroelectric polarization can electrically modulate the magnon-mediated spin-orbit torque by controlling the non-collinear antiferromagnetic structure in multiferroic bismuth ferrite thin films with coupled antiferromagnetic and ferroelectric orders. In this multiferroic magnon torque device, magnon information is encoded to ferromagnetic bits by the magnon-mediated spin torque. By manipulating the two coupled non-volatile state variables—ferroelectric polarization and magnetization—we further present reconfigurable logic 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.

Date: 2024
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DOI: 10.1038/s41467-024-50372-3

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