Anomalous Hall effect in YIG|Pt bilayers

Journal Article · Mon Mar 30 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4916342· OSTI ID:22398818

Meyer, Sibylle; Schlitz, Richard ^[1]; Geprägs, Stephan; Opel, Matthias ^[1]; Huebl, Hans; Goennenwein, Sebastian T. B. ^[1]; Gross, Rudolf ^[1]

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1. Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching (Germany)

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 G{sub i} plays a crucial role in YIG|Pt bilayers. In particular, our data suggest a sign change in G{sub i} between 10 K and 300 K. Additionally, we report a higher order Hall effect contribution, which appears in thin Pt films on YIG at low temperatures.

• OSTI ID: 22398818
• Journal Information: Applied Physics Letters, Vol. 106, Issue 13; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRIC POTENTIAL
FERRITE GARNETS
FILMS
HALL EFFECT
IRON OXIDES
LAYERS
MAGNETIZATION
MAGNETORESISTANCE
ORIENTATION
PLATINUM
SPIN
TEMPERATURE DEPENDENCE
YTTRIUM
YTTRIUM COMPOUNDS