We investigate the spin Hall effect (SHE) in a van der Waals (vdW) ferromagnet ${\mathrm{Fe}}_5{\mathrm{GeTe}}_2$ (FGT) with a Curie temperature $T_{\mathrm{C}}$ of 310 K utilizing the spin-torque ferromagnetic resonance method. In synchronization with the emergence of the ferromagnetic phase resulting in the anomalous Hall effect (AHE), a noticeable enhancement in the SHE was observed below $T_{\mathrm{C}}$. On the other hand, the SHE shows a different temperature dependence from the AHE: the effective spin Hall conductivity is clearly enhanced with decreasing temperature unlike the anomalous Hall conductivity, reflecting the variation in the band structure accompanied by the complicated magnetic ordering of the FGT. The results provide a deep understanding of the SHE in magnetic materials to open a new route for novel functionalities in vdW materials-based spintronic devices.

Close

PrevNext

View figure in article

• Spin dynamics
• Spin pumping
• Spin relaxation
• Spin torque nano-oscillators
• Spin-orbit torque
• Spintronics
• van der Waals systems