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Spin-torque induced oscillations in the point contact geometry (large diameter)
Gray-scale snapshots of the out-of-plane magnetization component for one of the localized oscillation modes induced in a Py layer by the spin-polarized current injected via the point contact with the diameter 80 nm.
Panel (a) shows the creation process of two vortex-antivortex (V-AV) pairs and the in-plane arrow plot of a typical V-AV quadrupole configuration. Panel (b) displays the propagation and decay of the two V-AV pairs. The physical size of the displayed area is 400 x 400 nm2 (total size of the simulated area is 2 x 2 m2). |
