1. Large amplitude spin torque vortex oscillations at zero external field using a perpendicular spin polarizer.
- Author
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Dussaux, A., Grimaldi, E., Salles, B. Rache, Jenkins, A. S., Khvalkovskiy, A. V., Bortolotti, P., Grollier, J., Kubota, H., Fukushima, A., Yakushiji, K., Yuasa, S., Cros, V., and Fert, A.
- Subjects
SPINTRONICS ,TORQUE ,SPIN polarization ,FREQUENCY response ,MAGNETIZATION - Abstract
We investigate the microwave response of a spin transfer vortex based oscillator in a magnetic tunnel junction with an in-plane reference layer combined with a spin valve with an out-of-plane magnetization spin polarizing layer. The main advantage of this perpendicular spin polarizer is to induce a large spin transfer force even at zero magnetic field, thus leading to a record emitted power (up to 0.6 μW) associated to a very narrow spectral linewidth of a few hundreds of kHz. The characteristics of this hybrid vortex based spin transfer nano-oscillator obtained at zero field and room temperature are of great importance for applications based on rf spintronic devices as integrated and tunable microwave source and/or microwave detector. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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