Thermoelectric effects in magnetic nanostructures

Moosa Hatami; Gerrit E.W. Bauer; Qinfang Zhang; Paul J. Kelly

doi:10.1103/PhysRevB.79.174426

Thermoelectric effects in magnetic nanostructures

Moosa Hatami, Gerrit E.W. Bauer, Qinfang Zhang, Paul J. Kelly

Research output: Contribution to journal › Article › peer-review

150 Citations (Scopus)

Abstract

We model and evaluate the Peltier and Seebeck effects in magnetic multilayer nanostructures by a finite-element theory of thermoelectric properties. We present analytical expressions for the thermopower and the current-induced temperature changes due to Peltier cooling/heating. The thermopower of a magnetic element is in general spin polarized, leading to spin-heat coupling effects. Thermoelectric effects in spin valves depend on the relative alignment of the magnetization directions and are sensitive to spin-flip scattering as well as inelastic collisions in the normal-metal spacer.

Original language	English
Article number	174426
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	79
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.79.174426
Publication status	Published - 2009 May 1
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.79.174426

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AU - Hatami, Moosa

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AU - Zhang, Qinfang

AU - Kelly, Paul J.

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Y1 - 2009/5/1

N2 - We model and evaluate the Peltier and Seebeck effects in magnetic multilayer nanostructures by a finite-element theory of thermoelectric properties. We present analytical expressions for the thermopower and the current-induced temperature changes due to Peltier cooling/heating. The thermopower of a magnetic element is in general spin polarized, leading to spin-heat coupling effects. Thermoelectric effects in spin valves depend on the relative alignment of the magnetization directions and are sensitive to spin-flip scattering as well as inelastic collisions in the normal-metal spacer.

AB - We model and evaluate the Peltier and Seebeck effects in magnetic multilayer nanostructures by a finite-element theory of thermoelectric properties. We present analytical expressions for the thermopower and the current-induced temperature changes due to Peltier cooling/heating. The thermopower of a magnetic element is in general spin polarized, leading to spin-heat coupling effects. Thermoelectric effects in spin valves depend on the relative alignment of the magnetization directions and are sensitive to spin-flip scattering as well as inelastic collisions in the normal-metal spacer.

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Thermoelectric effects in magnetic nanostructures

Abstract

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