Publikation: Spin Seebeck effect at microwave frequencies
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2016
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Schreier, Michael
Kramer, Franz
Huebl, Hans
Geprägs, Stephan
Gross, Rudolf
Noack, Timo
Langner, Thomas
Serga, Alexander A.
Hillebrands, Burkard
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Physical Review B. American Physical Society (APS). 2016, 93(22), 224430. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.93.224430
Zusammenfassung
We experimentally study the transient voltage response of yttrium iron garnet/platinum bilayer samples subject to periodic heating up to gigahertz frequencies. We observe an intrinsic cutoff frequency of the induced thermopower voltage, which characteristically depends on the thickness of the yttrium iron garnet film. The cutoff frequency reaches values of up to 350 MHz in a 50-nm-thick yttrium iron garnet film, but drops to below 1 MHz for several-micrometer-thick films. These data corroborate the notion that the magnon spectrum responsible for the spin current emission in the spin Seebeck effect can be shaped by tuning the thickness of the ferromagnetic layer.
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SCHREIER, Michael, Franz KRAMER, Hans HUEBL, Stephan GEPRÄGS, Rudolf GROSS, Sebastian T. B. GOENNENWEIN, Timo NOACK, Thomas LANGNER, Alexander A. SERGA, Burkard HILLEBRANDS, Vitaliy I. VASYUCHKA, 2016. Spin Seebeck effect at microwave frequencies. In: Physical Review B. American Physical Society (APS). 2016, 93(22), 224430. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.93.224430BibTex
@article{Schreier2016-02-24T09:11:41ZSeebe-52404,
year={2016},
doi={10.1103/PhysRevB.93.224430},
title={Spin Seebeck effect at microwave frequencies},
number={22},
volume={93},
issn={2469-9950},
journal={Physical Review B},
author={Schreier, Michael and Kramer, Franz and Huebl, Hans and Geprägs, Stephan and Gross, Rudolf and Goennenwein, Sebastian T. B. and Noack, Timo and Langner, Thomas and Serga, Alexander A. and Hillebrands, Burkard and Vasyuchka, Vitaliy I.},
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