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Title: Electrically switchable van der Waals magnon valves
Authors: Chen, Guangyi
Qi, Shaomian
Liu, Jianqiao
Chen, Di
Wang, Jiongjie
Yan, Shili
Zhang, Yu
Cao, Shimin
Lu, Ming
Tian, Shibing
Chen, Kangyao
Yu, Peng
Liu, Zheng
Xie, X. C.
Xiao, Jiang
Shindou, Ryuichi
Chen, Jian-Hao
Keywords: Engineering::Materials
Issue Date: 2021
Source: Chen, G., Qi, S., Liu, J., Chen, D., Wang, J., Yan, S., Zhang, Y., Cao, S., Lu, M., Tian, S., Chen, K., Yu, P., Liu, Z., Xie, X. C., Xiao, J., Shindou, R. & Chen, J. (2021). Electrically switchable van der Waals magnon valves. Nature Communications, 12(1), 6279-.
Project: NRF-CRP21-2018-0007
Journal: Nature Communications 
Abstract: Van der Waals magnets have emerged as a fertile ground for the exploration of highly tunable spin physics and spin-related technology. Two-dimensional (2D) magnons in van der Waals magnets are collective excitation of spins under strong confinement. Although considerable progress has been made in understanding 2D magnons, a crucial magnon device called the van der Waals magnon valve, in which the magnon signal can be completely and repeatedly turned on and off electrically, has yet to be realized. Here we demonstrate such magnon valves based on van der Waals antiferromagnetic insulator MnPS3. By applying DC electric current through the gate electrode, we show that the second harmonic thermal magnon (SHM) signal can be tuned from positive to negative. The guaranteed zero crossing during this tuning demonstrates a complete blocking of SHM transmission, arising from the nonlinear gate dependence of the non-equilibrium magnon density in the 2D spin channel. Using the switchable magnon valves we demonstrate a magnon-based inverter. These results illustrate the potential of van der Waals anti-ferromagnets for studying highly tunable spin-wave physics and for application in magnon-base circuitry in future information technology.
ISSN: 2041-1723
DOI: 10.1038/s41467-021-26523-1
Rights: © 2021 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit licenses/by/4.0/.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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