Mutual phase-locking in high frequency microwave nanooscillators as function of field angle

Details Mutual phase-locking in high frequency microwave nanooscillators as function of field angle Mutual phase-locking in high frequency microwave nanooscillators as function of field angle

2007-11-12

arxiv.org/abs/0711.1770v2

Physics

Condensed Matter

Materials Science

11 pages, 3 figures, submitted to APL

Scientific paper

10.1016/j.jmmm.2008.03.046

We perform a qualitative analysis of phase locking in a double point-contact spinvalve system by solving the Landau-Lifshitz-Gilbert-Slonzewski equation using a hybrid-finite-element method. We show that the phase-locking behaviour depends on the applied field angle. Starting from a low field angle, the locking-current difference between the current through contact A and B increases with increasing angle up to a maximum of 14 mA at 30 degree and it decreases thereafter until it reaches a minimum of 1 mA at 75 degree. The tunability of the phase-lock frequency with current decreases linearly with increasing out of plane angle from 45 to 21 MHz/mA.

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