The spin ice Ho2Ti2O7 versus the spin liquid Tb2Ti2O7: field-induced magnetic structures

被引：5
作者：
Sazonov, A. P. [1 ]
Gukasov, A. [1 ]
Mirebeau, I. [1 ]
机构：
[1] CEA, Ctr Saclay, DSM, IRAMIS,Lab Leon Brillouin, F-91191 Gif Sur Yvette, France
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2011年 / 23卷 / 16期
关键词：
D O I：
10.1088/0953-8984/23/16/164221
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We studied the field-induced magnetic structures of Ho2Ti2O7 spin ice by means of single-crystal neutron diffraction with a magnetic field applied along a [110] direction. These structures are compared to those of the spin liquid Tb2Ti2O7 previously measured in similar experimental conditions. For both compounds, magnetic structures of two types with k = 0 and k = (0, 0, 1) propagation vectors coexist at low temperature (1.6 K) and high applied field (7 T). The k = 0 structures are described by the basis functions of the same irreducible representation for both Tb2Ti2O7 and Ho2Ti2O7. On the other hand, the k = (0, 0, 1) structures of Tb2Ti2O7 and Ho2Ti2O7 correspond to different irreducible representations, leading to different magnetic structures.
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页数：5
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