Regensburg 2016 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 17: Poster Session I

MA 17.41: Poster

Dienstag, 8. März 2016, 09:30–12:30, Poster B1

Experimental Analysis of the Anomalous Hall Effect Arising from Noncollinear Antiferromagnetism in MnIr Thin Films — •Jan Krieft^1,2, Christian Sterwerf^1,2, Karsten Rott^1,2, Jan-Michael Schmalhorst^1,2, and Günter Reiss^1,2 — ¹Physics Department, Bielefeld University, 33615 Bielefeld, Germany — ²Center for Spinelectronic Materials and Devices , Universitätsstrasse 25, 33615 Bielefeld, Germany

First-principles electronic structure calculations and symmetry arguments predict a large anomalous Hall conductivity in Mn3Ir due to a noncollinear antiferromagnetic structure. Based on field cooling in a high field cryostat, we verified the existence of a small scale anomalous Hall effect in a high-temperature antiferromagnet, which is therefore not proportional to the classical magnetization. In this work, we report on an anomalous Hall effect occurring, however it is smaller than theoretically predicted.