Tunable unconventional spin orbit torque magnetization dynamics in van der Waals heterostructures
Artikel i vetenskaplig tidskrift, 2025
Two-dimensional quantum material heterostructures can offer a promising platform for energy-efficient non-volatile spin-based technologies. However, spin dynamics experiments to understand the basic spin-orbit torque phenomena are so far lacking. Here, we demonstrate unconventional out-of-plane magnetization dynamics, and energy-efficient and field-free spin-orbit torque switching in a van der Waals heterostructure comprising out-of-plane magnet Fe3GaTe2 and topological Weyl semimetal TaIrTe4. We measured non-linear second harmonic Hall signal in TaIrTe4/Fe3GaTe2 devices to evaluate the magnetization dynamics, which is characterized by large and tunable out-of-plane damping-like torque. Energy-efficient and deterministic field-free SOT magnetization switching is achieved at room temperature with a very low current density. First-principles calculations unveil the origin of the unconventional charge-spin conversion phenomena, considering the crystal symmetry and electronic structure of TaIrTe4. These results establish that van der Waals heterostructures provide a promising route to energy-efficient, field-free, and tunable spintronic devices.
Författare
Lalit Pandey
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Bing Zhao
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Karma Tenzin
Royal University of Bhutan
Rijksuniversiteit Groningen
Roselle Ngaloy
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Veronika Lamparská
Rijksuniversiteit Groningen
Himanshu Bangar
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Aya Ali
University of Sharjah
Mahmoud Abdel-Hafiez
Uppsala universitet
Fayoum University
University of Sharjah
Gaojie Zhang
Huazhong University of Science and Technology
Hao Wu
Huazhong University of Science and Technology
Haixin Chang
Huazhong University of Science and Technology
Lars Sjöström
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Prasanna Rout
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Jagoda Sławińska
Rijksuniversiteit Groningen
Saroj Prasad Dash
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Nature Communications
2041-1723 (ISSN) 20411723 (eISSN)
Vol. 16 1 8722Tvådimensionell spintronik minnesteknik
Vetenskapsrådet (VR) (2021-05925), 2021-12-01 -- 2024-11-30.
2D material-baserad teknologi för industriella applikationer (2D-TECH) Fas 2
Mölnlycke healthcare (2024-03852), 2025-01-01 -- 2029-12-31.
VINNOVA (2024-03852), 2024-11-01 -- 2029-12-31.
Spinntronik med topologiskt kvantmaterial och magnetisk heterostruktur
Vetenskapsrådet (VR) (2021-04821), 2022-01-01 -- 2025-12-31.
2D Heterostructure Non-volatile Spin Memory Technology (2DSPIN-TECH)
Europeiska kommissionen (EU) (EC/HE/101135853), 2023-12-01 -- 2026-11-30.
Ämneskategorier (SSIF 2025)
Atom- och molekylfysik och optik
Den kondenserade materiens fysik
Infrastruktur
Myfab (inkl. Nanotekniklaboratoriet)
DOI
10.1038/s41467-025-64109-3
PubMed
41027903