Current-driven ferromagnetic resonance, mechanical torques and rotary motion in magnetic nanostructures
arXiv:cond-mat/0609258 · doi:10.1103/PhysRevB.75.014430
Abstract
We study theoretically the detection and possible utilization of electric current-induced mechanical torques in ferromagnetic-normal metal heterostructures that are 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 that is 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 --dynamics. 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.
This resubmission corrects typos in Appendix A 26 pages, 7 figures
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- On the line shape of the electrically detected ferromagnetic resonance
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- Magnetoresistance and spin-transfer torque in magnetic tunnel junctions
- Effects of mechanical rotation on spin currents
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- Current-induced torques in the presence of spin-orbit coupling
- Experimental Demonstration of the Co-existence of the Spin Hall and Rashba Effects in beta-Tantalum/Ferromagnet Bilayers
- Nanomechanical Detection of Itinerant Electron Spin Flip
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- Renormalization of spin-rotation coupling
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- Spin Transfer of Quantum Information between Majorana Modes and a Resonator
- Topological magnons on the triangular kagome lattice
- Control of vibrational states by spin-polarized transport in a carbon nanotube resonator
- Synchronization of spin-transfer torque oscillators by spin pumping, inverse spin Hall, and spin Hall effects
- Generalized magnetoelectronic circuit theory and spin relaxation at interfaces in magnetic multilayers
- Dynamical amplification of magnetoresistances and Hall currents up to the THz regime
- Eddy magnetization from the chiral Barnett effect
- Charge pumping and the colored thermal voltage noise in spin valves
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