  The topological Hall effect (THE) is critical to the exploration of the spin
chirality generated by the real-space Berry curvature, which has attracted
worldwide attention for its prospective applications in spintronic devices.
However, the prominent THE remains elusive at room temperature, which severely
restricts the practical integration of chiral spin textures. Here, we show a
colossal intrinsic THE in large-area ferromagnet Cr5Te6 thin films epitaxially
grown by pulsed laser deposition. Such a THE can be maintained until 270 K,
which is attributed to the field-stimulated noncoplanar spin textures induced
by the interaction of the in-plane ferromagnet and antiferromagnet
infrastructures. Our first-principles calculations further verify the
considerable Dzyaloshinskii-Moriya interaction in Cr5Te6. This work not only
paves the way for robust chiral spin textures near room temperature in
large-area low-dimensional ferromagnetic films for practical applications, but
also facilitates the development of high-density and dissipationless spintronic
devices.
