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Large Room-Temperature Magnetoresistance in van der Waals Ferromagnet/Semiconductor Junctions

Zhu, Wenkai; Xie, Shihong; Lin, Hailong; Zhang, Gaojie; Wu, Hao; Hu, Tiangui; Wang, Ziao; Zhang, Xiaomin; Xu, Jiahan; Wang, Yujing; Zheng, Yuanhui; Yan, Faguang; Zhang, Jing; Zhao, Lixia; Patanè, Amalia; Zhang, Jia; Chang, Haixin; Wang, Kaiyou


Wenkai Zhu

Shihong Xie

Hailong Lin

Gaojie Zhang

Hao Wu

Tiangui Hu

Ziao Wang

Xiaomin Zhang

Jiahan Xu

Yujing Wang

Yuanhui Zheng

Faguang Yan

Lixia Zhao

Jia Zhang

Haixin Chang

Kaiyou Wang


A magnetic tunnel junction (MTJ) is the core component in memory technologies, such as the magnetic random-access memory, magnetic sensors and programmable logic devices. In particular, MTJs based on two-dimensional van der Waals (vdW) heterostructures offer unprecedented opportunities for low power consumption and miniaturization of spintronic devices. However, their operation at room temperature remains a challenge. Here, we report a large tunnel magnetoresistance (TMR) of up to 85% at room temperature (T = 300 K) in vdW MTJs based on a thin (< 10 nm) semiconductor spacer WSe2 layer embedded between two Fe3GaTe2 electrodes with intrinsic above-room-temperature ferromagnetism. The TMR in the MTJ increases with decreasing temperature up to 164% at T = 10 K. The demonstration of TMR in ultra-thin MTJs at room temperature opens a realistic and promising route for next-generation spintronic applications beyond the current state of the art.


Zhu, W., Xie, S., Lin, H., Zhang, G., Wu, H., Hu, T., …Wang, K. (2022). Large Room-Temperature Magnetoresistance in van der Waals Ferromagnet/Semiconductor Junctions. Chinese Physics Letters, 39(12), Article 128501.

Journal Article Type Article
Acceptance Date Nov 16, 2022
Online Publication Date Nov 17, 2022
Publication Date Nov 17, 2022
Deposit Date Nov 18, 2022
Publicly Available Date Nov 18, 2023
Journal Chinese Physics Letters
Print ISSN 0256-307X
Electronic ISSN 1741-3540
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 39
Issue 12
Article Number 128501
Keywords General Physics and Astronomy
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