  We used micromagnetic simulations to investigate the spatial distributions of
the effective magnetic fields induced by spin chirality in crossed nanowires
with three characteristic magnetic structures: a radiated-shape, an antivortex,
and a uniform-like states. Our results indicate that, unlike the anomalous Hall
effect, the topological Hall effect (which is related to the spin chirality)
depends on both the polarity and the vorticity. Therefore, measuring the
topological Hall effect can detect both the polarity and the vorticity
simultaneously in crossed nanowires. This approach may be suitable for use as
an elemental technique in the quest for a next-generation multi-value memory.
