Thermal Spin-Transfer Torque in Magnetoelectronic Devices


Hatami, Moosa and Bauer, Gerrit E.W. and Zhang, Qinfang and Kelly, Paul J. (2007) Thermal Spin-Transfer Torque in Magnetoelectronic Devices. Physical Review Letters, 99 (6). 066603. ISSN 0031-9007

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Abstract:We predict that the magnetization direction of a ferromagnet can be reversed by the spin-transfer torque accompanying spin-polarized thermoelectric heat currents. We illustrate the concept by applying a finite-element theory of thermoelectric transport in disordered magnetoelectronic circuits and devices to metallic spin valves. When thermalization is not complete, a spin heat accumulation vector is found in the normal-metal spacer, i.e., a directional imbalance in the temperature of majority and minority spins.
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Copyright:© 2007American Physical Society
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