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.
Cite
@article{arxiv.0711.1770,
title = {Mutual phase-locking in high frequency microwave nanooscillators as function of field angle},
author = {G. Hrkac and T. Schrefl and S. Bance and D. Allwood and A. Goncharov and J. Dean and D. Suess},
journal= {arXiv preprint arXiv:0711.1770},
year = {2009}
}