Publikation:

Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures

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2017

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Ganzhorn, Kathrin
Wimmer, Tobias
Cramer, Joel
Schlitz, Richard
Geprägs, Stephan
Jakob, Gerhard
Gross, Rudolf
Huebl, Hans

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http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1nrr5qbrqww024
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https://doi.org/10.1063/1.4986848
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CC BY 4.0

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AIP Advances. American Institute of Physics (AIP). 2017, 7, 085102. eISSN 2158-3226. Available under: doi: 10.1063/1.4986848

Zusammenfassung

We study the transport of thermally excited non-equilibrium magnons through the ferrimagnetic insulator YIG using two electrically isolated Pt strips as injector and detector. The diffusing magnons induce a non-local inverse spin Hall voltage in the detector corresponding to the so-called non-local spin Seebeck effect (SSE). We measure the non-local SSE as a function of temperature and strip separation. In experiments at room temperature we observe a sign change of the non-local SSE voltage at a characteristic strip separation d0, in agreement with previous investigations. At lower temperatures however, we find a strong temperature dependence of d0. This suggests that both the angular momentum transfer across the YIG/Pt interface as well as the transport mechanism of the magnons in YIG as a function of temperature must be taken into account to describe the non-local SSE.

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530 Physik

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ISO 690GANZHORN, Kathrin, Tobias WIMMER, Joel CRAMER, Richard SCHLITZ, Stephan GEPRÄGS, Gerhard JAKOB, Rudolf GROSS, Hans HUEBL, Mathias KLÄUI, Sebastian T. B. GOENNENWEIN, 2017. Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures. In: AIP Advances. American Institute of Physics (AIP). 2017, 7, 085102. eISSN 2158-3226. Available under: doi: 10.1063/1.4986848
BibTex
@article{Ganzhorn2017Tempe-52290,
  year={2017},
  doi={10.1063/1.4986848},
  title={Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures},
  volume={7},
  journal={AIP Advances},
  author={Ganzhorn, Kathrin and Wimmer, Tobias and Cramer, Joel and Schlitz, Richard and Geprägs, Stephan and Jakob, Gerhard and Gross, Rudolf and Huebl, Hans and Kläui, Mathias and Goennenwein, Sebastian T. B.},
  note={Article Number: 085102}
}
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