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Microwave sources

Spin-torque oscillators get in phase

The synchronization of four magnetic vortices without the use of a magnetic field has brought nanoscale microwave oscillators one step closer to fruition.

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Figure 1: Geometry of a spin-torque oscillator consisting of a 'fixed' magnetic layer, a non-magnetic spacer and a 'free' magnetic layer.


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Slavin, A. Spin-torque oscillators get in phase. Nature Nanotech 4, 479–480 (2009).

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