The recent emergence of magnetic van der Waals materials allows for the investigation of current induced magnetization manipulation in two dimensional materials. Uniquely, Fe3GeTe2 has a crystalline structure that allows for the presence of bulk spin-orbit torques (SOTs), that we quantify in a Fe3GeTe2 flake. From the symmetry of the measured torques, we identify the current induced effective fields using harmonic analysis and find dominant bulk SOTs, which arise from the symmetry in the crystal structure. Our results show that Fe3GeTe2 uniquely can exhibit bulk SOTs in addition to the conventional interfacial SOTs enabling magnetization manipulation even in thick single layers without the need for complex multilayer engineering.
@article{arxiv.2107.09420,
title = {Strong bulk spin-orbit torques quantified in the van der Waals ferromagnet Fe3GeTe2},
author = {Franziska Martin and Kyujoon Lee and Maurice Schmitt and Anna Liedtke and Aga Shahee and Haakon Thømt Simensen and Tanja Scholz and Tom G. Saunderson and Dongwook Go and Martin Gradhand and Yuriy Mokrousov and Thibaud Denneulin and András Kovács and Bettina Lotsch and Arne Brataas and Mathias Kläui},
journal= {arXiv preprint arXiv:2107.09420},
year = {2022}
}