Static Properties and Current-Driven Dynamics of Domain Walls in Perpendicular Magnetocrystalline Anisotropy Nanostrips with Rectangular Cross-Section
Figure 3
Current driven DW dynamics along a rough () strip with . Micromagnetically () computed temporal evolution of the DW position under three different density currents: (a) , (b) and (c) for a nonadiabatic parameter of . Blue-dashed lines correspond to the deterministic case (), whereas red-solid lines correspond to ten stochastic realizations at room temperature (). (d)–(g) show typical micromagnetic states of the propagating DW along a rough strip at room temperature. (h) Time-averaged DW velocity as function of for three different values of the nonadiabatic parameter: , , and . Open-dots correspond to results (with indication of the standard deviation), whereas solid symbols are the predictions from the 1 DM with , , and a periodic pinning potential given by with and . The inset shows the results around between and (Reprinted with permission From [70]. Copyright (2012), American Institute of Physics).
