Current-driven magnetization switching in a van der Waals ferromagnet Fe<sub>3</sub>GeTe<sub>2</sub>.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 31467976.
- Also identified by DOI 10.1126/sciadv.aaw8904 and PMC identifier 6707781.
- Licence recorded as CC BY-NC.
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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 Fe<sub>3</sub>GeTe<sub>2</sub>/Pt, in which the magnetization of few-layered Fe<sub>3</sub>GeTe<sub>2</sub> 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.