Fig. 2: Transformational dynamics and phase diagram of magnetic films with and without the excitation of SAWs.
From: Ordered creation and motion of skyrmions with surface acoustic wave
a Consecutive MOKE images acquired from the Co/Pd/Co/Pd/Co/Pt multilayer under different perpendicular magnetic fields with (upper row) and without (bottom row) SAWs. Images taken at –17.34 Oe, –13.24 Oe, –2.33 Oe, 8.57 Oe and 12.67 Oe with the RF signal of P = 21 dBm are shown in the upper column. Images taken at –14.61 Oe, 4.48 Oe, 9.94 Oe, 20.85 Oe and 25.76 Oe without SAW are shown in the bottom column. b The density of skyrmions (nsk) as a function of the applied power P under the magnetic field of –12.96 Oe. c The density of skyrmions phase diagram summarizing the evolution of different magnetic phase as a function of magnetic field Hz with and without SAWs.
