Evidence for Thermal Spin-Transfer Torque

Haiming Yu, S. Granville, D. P. Yu, and J.-Ph. Ansermet
Phys. Rev. Lett. 104, 146601 – Published 9 April 2010

Abstract

Large heat currents are obtained in Co/Cu/Co spin valves positioned at the middle of Cu nanowires. The second harmonic voltage response to an applied current is used to investigate the effect of the heat current on the switching of the spin valves. Both the switching field and the magnitude of the voltage response are found to be dependent on the heat current. These effects are evidence for a thermal spin-transfer torque acting on the magnetization and are accounted for by a thermodynamic model in which heat, charge and spin currents are linked by Onsager reciprocity relations.

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  • Received 1 December 2009

DOI:https://doi.org/10.1103/PhysRevLett.104.146601

©2010 American Physical Society

Authors & Affiliations

Haiming Yu1,2, S. Granville1, D. P. Yu2, and J.-Ph. Ansermet1

  • 1Ecole Polytechnique Fédérale de Lausanne, IPMC, Station 3, CH-1015 Lausanne-EPFL, Switzerland
  • 2State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, People’s Republic of China

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Issue

Vol. 104, Iss. 14 — 9 April 2010

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