Local atomic structure and discommensurations in the charge density wave of CeTe3

被引：68

作者：

Kim, H. J. ^{[1
]}

Malliakas, C. D.

Tomic, A. T.

Tessmer, S. H.

Kanatzidis, M. G.

Billinge, S. J. L.

机构：

[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[2] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.96.226401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The local structure of CeTe3 in the incommensurate charge density wave (IC-CDW) state has been obtained using atomic pair distribution function analysis of x-ray diffraction data. Local atomic distortions in the Te nets due to the CDW are larger than observed crystallographically, resulting in distinct short and long Te-Te bonds. Observation of different distortion amplitudes in the local and average structures is explained by the discommensurated nature of the CDW, since the pair distribution function is sensitive to the local displacements within the commensurate regions, whereas the crystallographic result averages over many discommensurated domains. The result is supported by STM data. This is the first quantitative local structural study within the commensurate domains in an IC-CDW system.

引用

页数：4

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