We measure the ordinary and the anomalous Hall effect in a set of yttrium iron garnet|platinum (YIG|Pt) bilayers via magnetization orientation dependent magnetoresistance experiments. Our data show that the presence of the ferrimagnetic insulator YIG leads to an anomalous Hall effect like voltage in Pt, which is sensitive to both Pt thickness and temperature. Interpretation of the experimental findings in terms of the spin Hall anomalous Hall effect indicates that the imaginary part of the spin mixing conductance plays a crucial role in YIG|Pt bilayers. In particular, our data suggest a sign change in between and . Additionally, we report a higher order Hall effect contribution, which appears in thin Pt films on YIG at low temperatures.
Anomalous Hall effect in YIG|Pt bilayers
Sibylle Meyer, Richard Schlitz, Stephan Geprägs, Matthias Opel, Hans Huebl, Rudolf Gross, Sebastian T. B. Goennenwein; Anomalous Hall effect in YIG|Pt bilayers. Appl. Phys. Lett. 30 March 2015; 106 (13): 132402. https://doi.org/10.1063/1.4916342
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