Trajectory and frequency of vortex gyration in a multi-nanocontact geometry<xref ref-type="fn" rid="cpb142478fn1">*</xref>

Trajectory and frequency of vortex gyration in a multi-nanocontact geometry*

Li Hua-Nan^a),^b), Liu Yan^a)†, Jia Min^a), Du An^a)

(a) The trajectories of VC (white dots) for current combinations ( i _p1, i _p0, i _p2) = (−1, 1, −1) and ( i _p1, i _p0, i _p2) = (1, 1, −1). (b) The instantaneous frequency ( ω ) of VC as a function of simulation time with the same J and various d for two current combinations. The black dots represent the positions where the frequency peaks appear. The background shows the contour plots of the Oersted field energy versus the VC position.