  The quantum anomalous Hall (QAH) effect is a quintessential consequence of
non-zero Berry curvature in momentum-space. The QAH insulator harbors
dissipation-free chiral edge states in the absence of an external magnetic
field. On the other hand, the topological Hall (TH) effect, a transport
hallmark of the chiral spin textures, is a consequence of real-space Berry
curvature. While both the QAH and TH effects have been reported separately,
their coexistence, a manifestation of entangled chiral edge states and chiral
spin textures, has not been reported. Here, by inserting a TI layer between two
magnetic TI layers to form a sandwich heterostructure, we realized a
concurrence of the TH effect and the QAH effect through electric field gating.
The TH effect is probed by bulk carriers, while the QAH effect is characterized
by chiral edge states. The appearance of TH effect in the QAH insulating regime
is the consequence of chiral magnetic domain walls that result from the
gate-induced Dzyaloshinskii-Moriya interaction and occur during the
magnetization reversal process in the magnetic TI sandwich samples. The
coexistence of chiral edge states and chiral spin textures potentially provides
a unique platform for proof-of-concept dissipationless spin-textured spintronic
applications.
