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

Ganzhorn K, Wimmer T, Cramer J, Schlitz R, Gepraegs S, Jakob G, Gross R, Huebl H, Klaeui M, Goennenwein STB (2017)

Publication Type: Journal article

Publication year: 2017

Journal

AIP Advances AIP Publishing

Book Volume: 7

Article Number: 085102

Journal Issue: 8

DOI: 10.1063/1.4986848

Abstract

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.

Involved external institutions

Bayerische Akademie der Wissenschaften DE Germany (DE) Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE)

How to cite

APA:

Ganzhorn, K., Wimmer, T., Cramer, J., Schlitz, R., Gepraegs, S., Jakob, G.,... Goennenwein, S.T.B. (2017). Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures. AIP Advances, 7(8). https://doi.org/10.1063/1.4986848

MLA:

Ganzhorn, Kathrin, et al. "Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures." AIP Advances 7.8 (2017).

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