Regensburg 2016 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 76: Frontiers of Electronic Structure Theory: Focus on Topology and Transport IV
HL 76.5: Vortrag
Donnerstag, 10. März 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.