The spin Hall magnetoresistance (SMR) allows to investigate the magnetic textures of magnetically ordered insulators in heterostructures with normal metals by magnetotransport experiments. We here report the observation of the SMR in in situ prepared ferromagnetic EuO/W thin film bilayers with magnetically and chemically well-defined interfaces. We characterize the magnetoresistance effects utilizing angle-dependent and field-dependent magnetotransport measurements as a function of temperature. Applying the established SMR model, we derive and quantify the real and imaginary parts of the complex spin mixing interface conductance. We find that the imaginary part is by one order of magnitude larger than the real part. Both decrease with increasing temperature. This reduction is in agreement with thermal fluctuations in the ferromagnet.
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10 May 2021
Research Article|
May 10 2021
Quantifying the spin mixing conductance of EuO/W heterostructures by spin Hall magnetoresistance experiments
Paul Rosenberger
;
Paul Rosenberger
a)
1
Peter Grünberg Institut (PGI-6), Forschungszentrum Jülich GmbH
, D-52428 Jülich, Germany
2
Fakultät Physik, Technische Universität Dortmund
, 44227 Dortmund, Germany
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Matthias Opel
;
Matthias Opel
3
Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften
, 85748 Garching, Germany
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Stephan Geprägs
;
Stephan Geprägs
3
Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften
, 85748 Garching, Germany
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Hans Huebl
;
Hans Huebl
3
Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften
, 85748 Garching, Germany
4
Physik-Department, Technische Universität München
, 85748 Garching, Germany
5
Munich Center for Quantum Science and Technology (MCQST)
, 80799 München, Germany
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Rudolf Gross
;
Rudolf Gross
3
Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften
, 85748 Garching, Germany
4
Physik-Department, Technische Universität München
, 85748 Garching, Germany
5
Munich Center for Quantum Science and Technology (MCQST)
, 80799 München, Germany
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Martina Müller
;
Martina Müller
6
Department of Physics, University of Konstanz
, D-78457 Konstanz, Germany
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Matthias Althammer
Matthias Althammer
a)
3
Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften
, 85748 Garching, Germany
4
Physik-Department, Technische Universität München
, 85748 Garching, Germany
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Paul Rosenberger
1,2,a)
Matthias Opel
3
Stephan Geprägs
3
Hans Huebl
3,4,5
Rudolf Gross
3,4,5
Martina Müller
6
Matthias Althammer
3,4,a)
1
Peter Grünberg Institut (PGI-6), Forschungszentrum Jülich GmbH
, D-52428 Jülich, Germany
2
Fakultät Physik, Technische Universität Dortmund
, 44227 Dortmund, Germany
3
Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften
, 85748 Garching, Germany
4
Physik-Department, Technische Universität München
, 85748 Garching, Germany
5
Munich Center for Quantum Science and Technology (MCQST)
, 80799 München, Germany
6
Department of Physics, University of Konstanz
, D-78457 Konstanz, Germany
Appl. Phys. Lett. 118, 192401 (2021)
Article history
Received:
March 02 2021
Accepted:
April 23 2021
Citation
Paul Rosenberger, Matthias Opel, Stephan Geprägs, Hans Huebl, Rudolf Gross, Martina Müller, Matthias Althammer; Quantifying the spin mixing conductance of EuO/W heterostructures by spin Hall magnetoresistance experiments. Appl. Phys. Lett. 10 May 2021; 118 (19): 192401. https://doi.org/10.1063/5.0049235
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