Regensburg 2016 – scientific programme

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SYES: Symposium Frontiers of Electronic Structure Theory: Focus on Topology and Transport

SYES 6: Frontiers of Electronic Structure Theory: Focus on Topology and Transport IV

SYES 6.5: Talk

Thursday, March 10, 2016, 12:00–12:15, H24

Anomalous hall effect in triangular antiferromagnetic ordered structure — •Hao Yang¹, Sun Yan², Felser Claudia², Parkin Stuart¹, and Binghai Yan² — ¹Max Planck Institute of Microstructure Physics, 06120 Halle(Saale), Germany — ²Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany

The anomalous Hall effect (AHE), a fundamental transport phenomenon of electrons in solids, has been believed to appear in ferromagnetic materials. Very recently AHE is revealed in noncollinear antiferromagnetic compounds. In this work, we have systematically investigated the AHE in antiferromagnetic materials Mn3X (X=Ir, Ge, Sn, Ga), where noncollinear 120-degree type antiferromagnetic spin order exists in the quasi-layered lattice. Assisted by the symmetry analysis, we demonstrate the strong anisotropy of the intrinsic anomalous Hall conductivity that is determined by the Berry curvature in the band structure. Our work well interprets recent experiment observations and predicts novel antiferromagnetic material candidates for the spintronic application.