In this work we propose and study a realization of an artificial spinice-like system, not based on any real material, in a triangular geometry. Ateach vertex of the lattice, the "ice-like rule" dictates that three spins mustpoint inward while the other three must point outward. We have studied thesystem's ground-state and the lowest energy excitations as well as thethermodynamic properties of the system. Our results show that, despitefundamental differences in the vertices topologies as compared to theartificial square spin ice, in the triangular array the lowest energyexcitations also behave as a kind of Nambu monopoles (two opposite monopolesconnected by an energetic string). Indeed, our results suggest that themonopoles charge value may have a universal value while the string tensioncould be tuned by changing the system's geometry, probably allowing the designof systems with different string tensions. Our Monte Carlo results suggest aphase transition in the Ising universality class where the mean distancebetween monopoles and anti-monopoles increases considerably at the criticaltemperature. The differences on the vertices topologies seem to facilitate theexperimental achievement of the system's ground-state, thereby allowing a moredetailed experimental study of the system's properties.
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