Anomalous Hall effect derived from multiple Weyl nodes in high-mobility EuTiO₃ films.

ABSTRACT: EuTiO₃, a magnetic semiconductor with a simple band structure, is one of the ideal systems to control the anomalous Hall effect (AHE) by tuning the Fermi level. The electrons in the conduction bands of La-doped EuTiO₃ are subject to the spin-orbit interaction and Zeeman field from the spontaneous magnetization, which generates rich structures in the electron band such as Weyl nodes. This unique property makes EuTiO₃ a relatively simple multiband system with its Berry curvature being controlled by electron doping and magnetic field. We report a nonmonotonic magnetic field dependence of the anomalous Hall resistivity, which is ascribed to the change of electronic bands induced by the Zeeman splitting during the magnetization process. The anomalous Hall resist

SUBMITTER: Takahashi KS 

PROVIDER: S-EPMC6054512 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature