This paper predicts the possibility to achieve synchronization (injection locking mechanism to a microwave current) of spin-transfer torque oscillators based on hybrid spin-valves composed by two free layers and two perpendicular polarizers at zero bias field, for the first time. The locking regions are attained for microwave frequency near 0.5f0, f0, and 2f0 where f0 is the input oscillator frequency. Those properties make this system promising for applications, such as high-speed frequency dividers and multipliers, and phase-locked-loop demodulators.
Injection locking at zero field in two free layer spin-valves
AZZERBONI, Bruno;FINOCCHIO, Giovanni
2013-01-01
Abstract
This paper predicts the possibility to achieve synchronization (injection locking mechanism to a microwave current) of spin-transfer torque oscillators based on hybrid spin-valves composed by two free layers and two perpendicular polarizers at zero bias field, for the first time. The locking regions are attained for microwave frequency near 0.5f0, f0, and 2f0 where f0 is the input oscillator frequency. Those properties make this system promising for applications, such as high-speed frequency dividers and multipliers, and phase-locked-loop demodulators.File in questo prodotto:
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