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Title: Anomalous Hall effect in YIG|Pt bilayers

Abstract

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.

Authors:
;  [1];  [2]; ;  [1]; ;  [1];  [2];  [1];  [2];  [2]
  1. Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching (Germany)
  2. (Germany)
Publication Date:
OSTI Identifier:
22398818
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 13; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Meyer, Sibylle, E-mail: sibylle.meyer@wmi.badw.de, Schlitz, Richard, Physik-Department, Technische Universität München, 85748 Garching, Geprägs, Stephan, Opel, Matthias, Huebl, Hans, Goennenwein, Sebastian T. B., Nanosystems Initiative Munich, 80799 München, Gross, Rudolf, Physik-Department, Technische Universität München, 85748 Garching, and Nanosystems Initiative Munich, 80799 München. Anomalous Hall effect in YIG|Pt bilayers. United States: N. p., 2015. Web. doi:10.1063/1.4916342.
Meyer, Sibylle, E-mail: sibylle.meyer@wmi.badw.de, Schlitz, Richard, Physik-Department, Technische Universität München, 85748 Garching, Geprägs, Stephan, Opel, Matthias, Huebl, Hans, Goennenwein, Sebastian T. B., Nanosystems Initiative Munich, 80799 München, Gross, Rudolf, Physik-Department, Technische Universität München, 85748 Garching, & Nanosystems Initiative Munich, 80799 München. Anomalous Hall effect in YIG|Pt bilayers. United States. doi:10.1063/1.4916342.
Meyer, Sibylle, E-mail: sibylle.meyer@wmi.badw.de, Schlitz, Richard, Physik-Department, Technische Universität München, 85748 Garching, Geprägs, Stephan, Opel, Matthias, Huebl, Hans, Goennenwein, Sebastian T. B., Nanosystems Initiative Munich, 80799 München, Gross, Rudolf, Physik-Department, Technische Universität München, 85748 Garching, and Nanosystems Initiative Munich, 80799 München. Mon . "Anomalous Hall effect in YIG|Pt bilayers". United States. doi:10.1063/1.4916342.
@article{osti_22398818,
title = {Anomalous Hall effect in YIG|Pt bilayers},
author = {Meyer, Sibylle, E-mail: sibylle.meyer@wmi.badw.de and Schlitz, Richard and Physik-Department, Technische Universität München, 85748 Garching and Geprägs, Stephan and Opel, Matthias and Huebl, Hans and Goennenwein, Sebastian T. B. and Nanosystems Initiative Munich, 80799 München and Gross, Rudolf and Physik-Department, Technische Universität München, 85748 Garching and Nanosystems Initiative Munich, 80799 München},
abstractNote = {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.},
doi = {10.1063/1.4916342},
journal = {Applied Physics Letters},
number = 13,
volume = 106,
place = {United States},
year = {Mon Mar 30 00:00:00 EDT 2015},
month = {Mon Mar 30 00:00:00 EDT 2015}
}