  Emerging wide varieties of the two-dimensional (2D) van der Waals (vdW)
magnets with atomically thin and smooth interfaces holds great promise for
next-generation spintronic devices. However, due to the lower Curie temperature
of the vdW 2D ferromagnets than room temperature, electrically manipulating its
magnetization at room temperature has not been realized. In this work, we
demonstrate the perpendicular magnetization of 2D vdW ferromagnet Fe3GaTe2 can
be effectively switched at room temperature in Fe3GaTe2/Pt bilayer by
spin-orbit torques (SOTs) with a relatively low current density of 1.3
10^7A/cm2. Moreover, the high SOT efficiency of \xi_{DL}~0.22 is quantitatively
determined by harmonic measurements, which is higher than those in Pt-based
heavy metal/conventional ferromagnet devices. Our findings of room-temperature
vdW 2D ferromagnet switching by SOTs provide a significant basis for the
development of vdW-ferromagnet-based spintronic applications.
