Current-driven magnetization switching in a van der Waals ferromagnet Fe 3 GeTe 2

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Abstract
The recent discovery of ferromagnetism in two-dimensional (2D) van der Waals (vdW) materials holds promises for spintronic devices with exceptional properties. However, to use 2D vdW magnets for building spintronic nanodevices such as magnetic memories, key challenges remain in terms of effectively switching the magnetization from one state to the other electrically. Here, we devise a bilayer structure of Fe3GeTe2/Pt, in which the magnetization of few-layered Fe3GeTe2 can be effectively switched by the spin-orbit torques (SOTs) originated from the current flowing in the Pt layer. The effective magnetic fields corresponding to the SOTs are further quantitatively characterized using harmonic measurements. Our demonstration of the SOT-driven magnetization switching in a 2D vdW magnet could pave the way for implementing low-dimensional materials in the next-generation spintronic applications.
Funding Information
  • National Natural Science Foundation of China
  • National Key Research and Development Program of China (2017YFA0206200, 2018YFB0407600, 2016YFA0300802, 2017YFA0206302)
  • National Key R&D Program of China
  • Key Research Program of Frontier Sciences of CAS
  • Strategic Priority Research Program (B) of CAS
  • King Abdullah University of Science and Technology (KAUST), Office of Sponsored Research
  • the NSFC-Science Foundation Ireland (SFI) Partnership Programme

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