Abstract
The spin-wave mediated interaction leading to the phase locking of two spin-torque oscillators is studied. The effective coupling parameter is derived and unexpectedly found to exhibit an oscillatory behavior as a function of intercontact distance. The period of the oscillation is shown to equal the wavelength of the spin wave radiated from the contact. As a result, the oscillators will alternate between in-phase and out-of-phase oscillations, corresponding to maximal and minimal output powers. The predictions are confirmed by micromagnetic simulation.
Original language | English (US) |
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Article number | 180402 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 79 |
Issue number | 18 |
DOIs | |
State | Published - May 1 2009 |