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Title: Spin Seebeck Effect in a Variety of Magnetic Systems
Originating Office: IAS
Speaker: Maekawa, Sadamichi
Issue Date: 14-Dec-2012
Event Date: 14-Dec-2012
Group/Series/Folder: Record Group 8.15 - Institute for Advanced Study
Series 3 - Audio-visual Materials
Location: 8.15:3 box 1.8
Notes: IAS Asia Pacific Workshop on Condensed Matter Physics. Talk no. 6
Title from title slide.
Host: Institute for Advanced Study.
Sponsor: The Collaborative Research Fund (CRF), The Research Grants Council (RGC).
Abstract: When metals and semiconductors are placed in a temperature gradient, the electric voltage is generated. This mechanism to convert heat into electricity, the so-called Seebeck effect, has attracted much attention as the mechanism for utilizing wasted heat energy. Ferromagnetic insulators are good conductors of spin current, i.e., the flow of electron spins. When they are placed in a temperature gradient, generated are spin current and the spin voltage, i.e., spin accumulation. Once the spin voltage is converted into the electric voltage by the inverse spin Hall effect in attached metal films, the electric voltage is obtained from heat energy. This is called the spin Seebeck effect (SSE). Here, the speaker presents the linear-response theory of SSE based on the fluctuation-dissipation theorem and discuss about SSE in a variety of the magnetic devices.
Duration: 32 min.
Appears in Series:8.15:3 - Audio-visual Materials
Videos for Public -- Distinguished Lectures