Long-range order at low temperatures in dipolar spin ice

被引：223

作者：

Melko, RG ^{[1
]}

den Hertog, BC

Gingras, MJP

机构：

[1] Univ Waterloo, Dept Phys, Waterloo, ON N2L 3G1, Canada

[2] Canadian Inst Adv Res, Toronto, ON M5G 1Z8, Canada

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.87.067203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：67203 / 1

页数：4

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