Charge ordering of magnetic monopoles in triangular spin ice patterns

Details Charge ordering of magnetic monopoles in triangular spin ice patterns Charge ordering of magnetic monopoles in triangular spin ice patterns

2010-04-06

arxiv.org/abs/1004.0855v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 4 figures

Scientific paper

Artificial spin ice offers the possibility to investigate a variety of dipolar orderings, spin frustrations and ground states. However, the most fascinating aspect is the realization that magnetic charge order can be established without spin order. We have investigated magnetic dipoles arranged on a honeycomb lattice as a function of applied field, using magnetic force microscopy. For the easy direction with the field parallel to one of the three dipole sublattices we observe at coercivity a maximum of spin frustration and simultaneously a maximum of charge order of magnetic monopoles with alternating charges $\pm$ 3.

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