ABSTRACT
Qualitatively similar method of “hearing RTN” has been
applied to detect and analyze the spin torque acting on DW
motion in magnetic tunnel junctions with perpendicular
to the ferromagnetic lead current (Herranz et al., 2011).
Critical current densities for the vertical-current-induced
domain-wall motion in elliptic MgO-based magnetic tunnel
junctions were found to be orders of magnitude smaller
than for DW motion in lateral geometries. Interestingly,
similar effects have been independently reported through
direct transportmeasurements in specially designed curved
MTJs (Chanthbouala et al., 2011).
