Spin Seebeck power generators

Journal Article · Mon Jan 27 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4863084· OSTI ID:22280561

Cahaya, Adam B.; Tretiakov, O. A. ^[1]; Bauer, Gerrit E. W. ^[2]

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1. Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
2. Institute for Materials Research and WPI-AIMR, Tohoku University, Sendai 980-8577 (Japan)

We derive expressions for the efficiency and figure of merit of two spin caloritronic devices based on the spin Seebeck effect (SSE), i.e., the generation of spin currents by a temperature gradient. The inverse spin Hall effect is conventionally used to detect the SSE and offers advantages for large area applications. We also propose a device that converts spin current into electric one by means of a spin-valve detector, which scales favorably to small sizes and approaches a figure of merit of 0.5 at room temperature.

• OSTI ID: 22280561
• Journal Information: Applied Physics Letters, Vol. 104, Issue 4; 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
EFFICIENCY
ELECTRIC CURRENTS
HALL EFFECT
PERFORMANCE
SEEBECK EFFECT
SPIN
TEMPERATURE GRADIENTS
TEMPERATURE RANGE 0273-0400 K