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

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

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GANZHORN, Kathrin, Tobias WIMMER, Joel CRAMER, Richard SCHLITZ, Stephan GEPRÄGS, Gerhard JAKOB, Rudolf GROSS, Hans HUEBL, Mathias KLÄUI, Sebastian T. B. GÖNNENWEIN, 2017. Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures. In: AIP Advances. American Institute of Physics (AIP). 7, 085102. eISSN 2158-3226. Available under: doi: 10.1063/1.4986848

@article{Ganzhorn2017Tempe-52290, title={Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures}, year={2017}, doi={10.1063/1.4986848}, 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 Gönnenwein, Sebastian T. B.}, note={Article Number: 085102} }

Ganzhorn, Kathrin Kläui, Mathias 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 d<sub>0</sub>, in agreement with previous investigations. At lower temperatures however, we find a strong temperature dependence of d<sub>0</sub>. 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. Wimmer, Tobias eng Jakob, Gerhard Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures Geprägs, Stephan Gönnenwein, Sebastian T. B. terms-of-use Jakob, Gerhard Gross, Rudolf 2017 Kläui, Mathias 2021-01-05T11:08:50Z Gross, Rudolf Huebl, Hans Wimmer, Tobias Geprägs, Stephan 2021-01-05T11:08:50Z Gönnenwein, Sebastian T. B. Ganzhorn, Kathrin Cramer, Joel Cramer, Joel Schlitz, Richard Schlitz, Richard Huebl, Hans

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