Time resolved spin Seebeck effect experiments

Journal Article · Mon May 19 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4879462· OSTI ID:22300199

Roschewsky, Niklas; Schreier, Michael; Schade, Felix; Ganzhorn, Kathrin; Meyer, Sibylle; Geprägs, Stephan ^[1]; Kamra, Akashdeep ^[1]; Huebl, Hans; Goennenwein, Sebastian T. B. ^[1]; Gross, Rudolf ^[1]

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1. Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Garching (Germany)

In this Letter, we present the results of transient thermopower experiments, performed at room temperature on yttrium iron garnet/platinum bilayers. Upon application of a time-varying thermal gradient, we observe a characteristic low-pass frequency response of the ensuing thermopower voltage with cutoff frequencies of up to 37 MHz. We interpret our results in terms of the spin Seebeck effect, and argue that small wavevector magnons are of minor importance for the spin Seebeck effect in our thin film hybrid structures.

• OSTI ID: 22300199
• Journal Information: Applied Physics Letters, Vol. 104, Issue 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRIC POTENTIAL
FERRITE GARNETS
LAYERS
MAGNONS
MHZ RANGE
PLATINUM
SEEBECK EFFECT
SPIN
TEMPERATURE GRADIENTS
TEMPERATURE RANGE 0273-0400 K
THIN FILMS
TIME RESOLUTION
TRANSIENTS
YTTRIUM COMPOUNDS