Publikation: Spin pumping in YIG/Pt bilayers as a function of layer thickness
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2015
Autor:innen
Haertinger, Markus
Back, Christian H.
Lotze, Johannes
Weiler, Mathias
Geprägs, Stephan
Huebl, Hans
Woltersdorf, Georg
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Physical Review B. American Physical Society (APS). 2015, 92(5), 054437. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.92.054437
Zusammenfassung
We systematically investigate the spin-pumping effect in a series of yttrium-iron-garnet (YIG)–platinum (Pt) bilayers, comparing both broadband ferromagnetic resonance and electrically detected spin-pumping experiments. We infer the effective spin-mixing conductance as a function of YIG and Pt layer thickness from ferromagnetic resonance measurements on pure YIG layers as well as on bilayer YIG/Pt samples in a frequency range from 2 to 20 GHz. In bare YIG films, we determine a Gilbert damping constant of approximately α=0.001. With an additional platinum layer on top of the YIG samples, the damping is significantly enhanced. The effective spin-mixing conductance extracted from the ferromagnetic resonance experiments is in agreement with that determined from independent electrically detected spin-pumping experiments.
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HAERTINGER, Markus, Christian H. BACK, Johannes LOTZE, Mathias WEILER, Stephan GEPRÄGS, Hans HUEBL, Sebastian T. B. GOENNENWEIN, Georg WOLTERSDORF, 2015. Spin pumping in YIG/Pt bilayers as a function of layer thickness. In: Physical Review B. American Physical Society (APS). 2015, 92(5), 054437. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.92.054437BibTex
@article{Haertinger2015pumpi-52429,
year={2015},
doi={10.1103/PhysRevB.92.054437},
title={Spin pumping in YIG/Pt bilayers as a function of layer thickness},
number={5},
volume={92},
issn={2469-9950},
journal={Physical Review B},
author={Haertinger, Markus and Back, Christian H. and Lotze, Johannes and Weiler, Mathias and Geprägs, Stephan and Huebl, Hans and Goennenwein, Sebastian T. B. and Woltersdorf, Georg},
note={Article Number: 054437}
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<dcterms:abstract xml:lang="eng">We systematically investigate the spin-pumping effect in a series of yttrium-iron-garnet (YIG)–platinum (Pt) bilayers, comparing both broadband ferromagnetic resonance and electrically detected spin-pumping experiments. We infer the effective spin-mixing conductance as a function of YIG and Pt layer thickness from ferromagnetic resonance measurements on pure YIG layers as well as on bilayer YIG/Pt samples in a frequency range from 2 to 20 GHz. In bare YIG films, we determine a Gilbert damping constant of approximately α=0.001. With an additional platinum layer on top of the YIG samples, the damping is significantly enhanced. The effective spin-mixing conductance extracted from the ferromagnetic resonance experiments is in agreement with that determined from independent electrically detected spin-pumping experiments.</dcterms:abstract>
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