  We have investigated the topological Hall effect (THE) in MnGa/Pt and MnGa/Ta
bilayers induced by interfacial Dzyaloshinskii-Moriya interaction (DMI). The
most evident THE signals have been found based on the MnGa films with small
critical DMI energy constant Dc. The large topological portion of the Hall
signal from the total Hall signal has been extracted in the whole temperature
range from 5 to 300 K. These results open up the exploration of the DMI induced
magnetic behavior based on the bulk perpendicular magnetic anisotropy materials
for fundamental physics and magnetic storage technologies.
