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

Gia Wei Chern, Paula Mellado, O. Tchernyshyov

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138 Scopus citations

Abstract

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 the charge order.

Original languageEnglish
Article number207202
JournalPhysical Review Letters
Volume106
Issue number20
DOIs
StatePublished - 20 May 2011

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