Frequency modulation of spin torque oscillator pairs

Details Frequency modulation of spin torque oscillator pairs Frequency modulation of spin torque oscillator pairs

2010-07-14

arxiv.org/abs/1007.2305v2

Appl. Phys. Lett., 98, 192501 (2011)

Physics

Condensed Matter

Materials Science

Scientific paper

10.1063/1.3588218

The current controlled modulation of nano-contact based spin torque oscillator (STO) pairs is studied in both the synchronized and non-synchronized states. The synchronized state shows a well behaved modulation and demonstrates robust mutual locking even under strong modulation. The power distribution of the modulation sidebands can be quantitatively described by assuming a single oscillator model. However, in the non-synchronized state, the modulation sidebands are not well described by the model, indicating interactions between the two individual nano-contact STOs. These findings are promising for potential applications requiring the modulation of large synchronized STO arrays.

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