  The transport response of dipole skyrmions in amorphous centrosymmetric Fe/Gd
multilayer is investigated by temperature and field-dependent resistivity
measurements collected in three current and magnetic field configurations. It
is shown that a dipole skyrmion lattice phase may form at certain temperatures
leading to a unique signature of the polar longitudinal resistivity. This
signature differs from the conventional field-varying parabolic response
associated with stripe phases, which transition to a disordered skyrmion phase
under applied fields. Transport measurements under different field history
protocols reveal that the anomaly in the polar longitudinal resistivity appears
under specific field history reversal processes. Our experimental results are
reproduced using micromagnetic simulations that show the anomaly in the polar
longitudinal resistivity is related to a domain wall reconfiguration that
occurs as the domain morphology transitions from disordered stripes to a
skyrmion lattice under applied perpendicular fields.
