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

H. J. Kim; C. D. Malliakas; A. T. Tomić; S. H. Tessmer; M. G. Kanatzidis; S. J L Billinge

doi:10.1103/PhysRevLett.96.226401

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

H. J. Kim^*, C. D. Malliakas, A. T. Tomić, S. H. Tessmer, M. G. Kanatzidis, S. J L Billinge

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

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Abstract

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.

Original language	English (US)
Article number	226401
Journal	Physical review letters
Volume	96
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.96.226401
State	Published - 2006

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.96.226401

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title = "Local atomic structure and discommensurations in the charge density wave of CeTe3",

abstract = "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.",

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T1 - Local atomic structure and discommensurations in the charge density wave of CeTe3

AU - Kim, H. J.

AU - Malliakas, C. D.

AU - Tomić, A. T.

AU - Tessmer, S. H.

AU - Kanatzidis, M. G.

AU - Billinge, S. J L

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

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

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