Magnetic charge and ordering in kagome spin ice.

摘要: We present a numerical study of magnetic ordering in spin ice on kagome, two-dimensional lattice corner-sharing triangles. The magnet has six ground states and the occurs two stages, as one might expect for six-state clock model. In with short-range interactions up to second neighbours, there is an intermediate critical phase separated from paramagnetic ordered phases by Kosterlitz-Thouless (KT) transitions. dipolar ice, long-range order staggered charges. high- low-temperature transitions are Ising 3-state Potts universality classes, respectively. Freeze-out defects charge produce very large correlation length phase. As result that, lower-temperature transition appears be KT type.