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Thermal Spin-Transfer Torques in Magnetoelectronic Devices

Authors
  • Hatami, Moosa
  • Bauer, Gerrit E. W.
  • Zhang, Qinfang
  • Kelly, Paul J.
Type
Preprint
Publication Date
Jul 02, 2007
Submission Date
Jan 09, 2007
Identifiers
DOI: 10.1103/PhysRevLett.99.066603
arXiv ID: cond-mat/0701163
Source
arXiv
License
Unknown
External links

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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