Observation of longitudinal spin-Seebeck effect in magnetic insulators

Observation of longitudinal spin-Seebeck effect in magnetic insulators

We propose a longitudinal spin-Seebeck effect (SSE), in which a magnon-induced spin current is injected parallel to a temperature gradient from a ferromagnet into an attached paramagnetic metal. The longitudinal SSE is measured in a simple and versatile system composed of a ferrimagnetic insulator Y...

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Veröffentlicht in:Applied physics letters 2010-10, Vol.97 (17), p.172505-172505-3
Hauptverfasser: Uchida, Ken-ichi, Adachi, Hiroto, Ota, Takeru, Nakayama, Hiroyasu, Maekawa, Sadamichi, Saitoh, Eiji
Format: Artikel
Sprache:eng
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Zusammenfassung:We propose a longitudinal spin-Seebeck effect (SSE), in which a magnon-induced spin current is injected parallel to a temperature gradient from a ferromagnet into an attached paramagnetic metal. The longitudinal SSE is measured in a simple and versatile system composed of a ferrimagnetic insulator Y 3 Fe 5 O 12 slab and a Pt film by means of the inverse spin-Hall effect. The experimental results highlight the intriguing character of the longitudinal SSE due to its own geometric configuration.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3507386