Combinatorics

Physics

Topology (electrical circuits)

Point reflection

Rashba effect

Mathematics

Heterojunction

Ferromagnetism

Skyrmion

Magnetic field

Spin–orbit interaction

Transition metal

Topological insulator

Catalysis

Hall effect

Spintronics

Chemistry

Materials science

Condensed matter physics

Quantum mechanics

Biochemistry

Advanced Materials

Topological Hall effect (THE), appearing as bumps and/or dips in the Hall resistance curves, is considered as a hallmark of the skyrmion spin texture originated from the inversion symmetry breaking and spin–orbit interaction. Recently, Néel‐type skyrmion is proposed based on the observed THE in 5d transition metal oxides heterostructures such as SrRuO 3 /SrIrO 3 bilayers, where the interfacial Dzyaloshinskii–Moriya interaction (DMI), due to the strong spin–orbit coupling (SOC) in SrIrO 3 and the broken inversion symmetry at the interface, is believed to play a significant role. Here the emergence of THE in SrRuO 3 single layers with thickness ranging from 3 to 6 nm is experimentally demonstrated. It is found that the oxygen octahedron rotation in SrRuO 3 also has a significant effect on the observed THE. Furthermore, the THE may be continuously tuned by an applied electrical field. It is proposed that the large SOC of Ru ions together with the broken inversion symmetry, mainly from the interface, produce the DMI that is responsible for the observed THE. The emergence of the gate‐tunable DMI in SrRuO 3 single layer may stimulate further investigations of new spin–orbit physics in strong SOC oxides.

Emergence of Topological Hall Effect in a SrRuO<sub>3</sub> Single Layer

Emergence of Topological Hall Effect in a SrRuO3 Single Layer

Emergence of Topological Hall Effect in a SrRuO₃ Single Layer