Two-stage ordering of spins in a dipolar spin ice on the kagome lattice

Details Two-stage ordering of spins in a dipolar spin ice on the kagome lattice Two-stage ordering of spins in a dipolar spin ice on the kagome lattice

2009-06-25

arxiv.org/abs/0906.4781v3

Phys. Rev. Lett. 106, 207202 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.106.207202

Spin ice, a peculiar thermal state of a frustrated ferromagnet on the pyrochlore lattice, has a finite entropy density and excitations carrying magnetic charge. By combining analytical arguments and Monte Carlo simulations, we show that spin ice on the two-dimensional kagome lattice orders in two stages. The intermediate phase has ordered magnetic charges and is separated from the paramagnetic phase by an Ising transition. The transition to the low-temperature phase is of the three-state Potts or Kosterlitz-Thouless type, depending on the presence of defects in charge order.

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