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.

arXiv commentAccepted, Appl. Phys. Lett

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Cited by in corpus (13)

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• General theory of topological Hall effect in systems with chiral spin textures
• Topological Properties and Functionalities in Oxide Thin Films and Interfaces
• Molecular Beam Epitaxy of KTaO${}_3$
• Oxygen Vacancy-Induced Topological Hall effect in a Nonmagnetic Band Insulator
• Large anomalous Nernst coefficient in an oxide Skyrmion crystal Chern 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
• Topological Hall effect for electron scattering on skyrmions in external magnetic field
• Hall effect driven by non-collinear magnetic polarons in diluted magnetic semiconductors
• 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