Issue 11, 2023

Room-temperature spin-valve devices based on Fe3GaTe2/MoS2/Fe3GaTe2 2D van der Waals heterojunctions

Abstract

The spin-valve effect has been the focus of spintronics over the last decades due to its potential for application in many spintronic devices. Two-dimensional (2D) van der Waals (vdW) materials are highly efficient to build spin-valve heterojunctions. However, the Curie temperatures (TC) of the vdW ferromagnetic (FM) 2D crystals are mostly below room temperature (∼30–220 K). It is very challenging to develop room-temperature, FM 2D crystal-based spin-valve devices. Here, we report room-temperature, FM 2D-crystal-based all-2D vdW Fe3GaTe2/MoS2/Fe3GaTe2 spin-valve devices. The magnetoresistance (MR) of the device was up to 15.89% at 2.3 K and 11.97% at 10 K, which are 4–30 times the MR of the spin valves of Fe3GeTe2/MoS2/Fe3GeTe2 and conventional NiFe/MoS2/NiFe. The typical spin valve effect showed strong dependence on the MoS2 spacer thickness in the vdW heterojunction. Importantly, the spin valve effect (0.31%) robustly existed even at 300 K with low working currents down to 10 nA (0.13 A cm−2). This work provides a general vdW platform to develop room-temperature, 2D FM-crystal-based 2D spin-valve devices.

Graphical abstract: Room-temperature spin-valve devices based on Fe3GaTe2/MoS2/Fe3GaTe2 2D van der Waals heterojunctions

Supplementary files

Article information

Article type
Paper
Submitted
09 дек 2022
Accepted
03 фев 2023
First published
06 фев 2023

Nanoscale, 2023,15, 5371-5378

Room-temperature spin-valve devices based on Fe3GaTe2/MoS2/Fe3GaTe2 2D van der Waals heterojunctions

W. Jin, G. Zhang, H. Wu, L. Yang, W. Zhang and H. Chang, Nanoscale, 2023, 15, 5371 DOI: 10.1039/D2NR06886A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements