Journal
PHYSICAL REVIEW B
Volume 75, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.75.014430
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We study theoretically the detection and possible utilization of electric current-induced mechanical torques in ferromagnetic-normal-metal heterostructures generated by spin-flip scattering or the absorption of transverse spin currents by a ferromagnet. To this end, we analyze the dc voltage signals over a spin valve driven by an ac current. In agreement with recent studies, this rectification, measured as a function of ac frequency and applied magnetic field, contains important information on the magnetostatics and magnetodynamics. Subsequently, we show that the vibrations excited by spin-transfer to the lattice can be detected as a splitting of the dc voltage resonance. Finally, we propose a concept for a spin-transfer-driven electric nanomotor based on integrating metallic nanowires with carbon nanotubes, in which the current-induced torques generate a rotary motion.
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