Evidence of a topological Hall effect in Eu${}_{1-x}$Sm${}_x$TiO${}_3$

Abstract

We report on the observation of a possible topological Hall effect in thin films of the itinerant ferromagnet Eu1-xSmxTiO3. EuTiO3 and Eu0.955Sm0.045TiO3 films were grown by molecular beam epitaxy. The EuTiO3 film is insulating. The Hall resistivity of the Eu0.955Sm0.045TiO3 films exhibits the anomalous Hall effect below the Curie temperature of ~ 5 K as well as additional features that appear at 2 K. It is shown that these features are magnetic in origin and consistent with the topological Hall effect seen in materials systems with topologically nontrivial spin textures, such as skyrmions. The results open up interesting possibilities for epitaxial hybrid heterostructures that combine topological magnetic states, tunable carrier densities, and other phenomena.

Accepted, Appl. Phys. Lett

References in corpus (5)

• Interface-driven topological Hall effect in SrRuO${}_3$-SrIrO${}_3$ bilayer
• Quantum transport theory of anomalous electric, thermoelectric, and thermal Hall effects in ferromagnets
• Chirality induced anomalous-Hall effect in helical spin crystals
• Novel metal-insulator-transition at the SrTiO3/SmTiO3 interface
• Separation of transport lifetimes in SrTiO3-based two-dimensional electron liquids

Cited by in corpus (7)

• Molecular Beam Epitaxy of KTaO${}_3$
• Oxygen Vacancy-Induced Topological Hall effect in a Nonmagnetic Band Insulator
• Oxygen vacancy-induced anomalous Hall effect in a nominally non-magnetic oxide
• Controlling the electrical and magnetic ground states by doping in the complete phase diagram of titanate Eu1-xLaxTiO3 thin films
• Spin-to-charge conversion at KTaO3(111) interfaces
• Correlating magnetic structure and magnetotransport in semimetal thin films of Eu${}_{1-x}$Sm${}_x$TiO${}_3$
• Violation of Pauli Limit at KTaO3(110) Interfaces