Phys Rev Lett. 2001 Aug 6;87(6):067203. Epub 2001 Jul 20.

Long-range order at low temperatures in dipolar spin ice.

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Department of Physics, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1.

Abstract

It has recently been suggested that long-range magnetic dipolar interactions are responsible for spin ice behavior in the Ising pyrochlore magnets Dy2Ti2O7 and Ho2Ti2O7. We report here numerical results on the low temperature properties of the dipolar spin ice model, obtained via a new loop algorithm which greatly improves the dynamics at low temperature. We recover the previously reported missing entropy in this model, and find a first order transition to a long-range ordered phase with zero total magnetization at very low temperature. We discuss the relevance of these results to Dy2Ti2O7 and Ho2Ti2O7.

PMID:: 11497852; [PubMed]

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Dipolar interactions and origin of spin ice in ising pyrochlore magnets [Phys Rev Lett. 2000]
Dipolar interactions and origin of spin ice in ising pyrochlore magnets
den Hertog BC, Gingras MJ. Phys Rev Lett. 2000 Apr 10; 84(15):3430-3.
Spin correlations in Ho2Ti2O7: a dipolar spin ice system. [Phys Rev Lett. 2001]
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Long-range order at low temperatures in dipolar spin ice.

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