摘要翻译：
Dy2Ti2O7是一种几何受挫磁性材料，具有从1K到60MK的强相关自旋冰区。自旋冰区的中子扩散弹性散射强度可以用弱相互作用六方自旋团簇的唯象模型很好地描述，这在其他几何受挫磁体中也是如此。我们提出了Dy2Ti2O7的一个高度精细的微观理论，它包括与第三近邻的长程偶极和交换相互作用，并证明了这种材料中的团簇纯粹是虚构的。复合自旋团簇的出现及其相关的散射模式是强关联态中辅助关联微调的标志。
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英文标题：
《Dy2Ti2O7 Spin Ice: a Test Case for Emergent Clusters in a Frustrated
  Magnet》
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作者：
Taras Yavors'kii, Tom Fennell, Michel J. P. Gingras, Steven T.
  Bramwell
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最新提交年份：
2008
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分类信息：

一级分类：Physics        物理学
二级分类：Statistical Mechanics        统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
  Dy2Ti2O7 is a geometrically frustrated magnetic material with a strongly correlated spin ice regime that extends from 1 K down to as low as 60 mK. The diffuse elastic neutron scattering intensities in the spin ice regime can be remarkably well described by a phenomenological model of weakly interacting hexagonal spin clusters, as invoked in other geometrically frustrated magnets. We present a highly refined microscopic theory of Dy2Ti2O7 that includes long-range dipolar and exchange interactions to third nearest neighbors and which demonstrates that the clusters are purely fictitious in this material. The seeming emergence of composite spin clusters and their associated scattering pattern is instead an indicator of fine-tuning of ancillary correlations within a strongly correlated state.
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PDF链接：
https://arxiv.org/pdf/707.3477