  Sets of nanomagnets are often utilized to mimic cellular automata in design
of nanomagnetic logic devices or frustration and emergence of magnetic charges
in artificial spin ice systems. in previous work we showed that unidirectional
arrangement of nanomagnets can behave as artificial spin ice, with frustration
arising from second neighbor dipolar interaction, and present good magnetic
charge mobility due to the low string tension among charges. Here, we present
an experimental investigation of magnetic charge population and mobility in
function of lateral and longitudinal distance among nanomagnets. Our results
corroborate partially the theoretical predictions, performed elsewhere by
emergent interaction model, could be useful in nanomagnet logic devices design
and brings new insights about the best design for magnetic charge ballistic
transport under low external magnetic field with magnetic charge mobility
tunning for application in magnetricity.
