Optical spectroscopy study on CeTe$_3$: evidence for multiple charge-density-wave orders

B. F. Hu; P. Zheng; R. H. Yuan; T. Dong; B. Cheng; Z. G. Chen; N. L. Wang

doi:10.1103/PhysRevB.83.155113

Optical spectroscopy study on CeTe$_3$: evidence for multiple charge-density-wave orders

Strongly Correlated Electrons 2013-05-29 v1

Authors: B. F. Hu , P. Zheng , R. H. Yuan , T. Dong , B. Cheng , Z. G. Chen , N. L. Wang

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Abstract

We performed optical spectroscopy measurement on single crystal of CeTe $_3$ , a rare-earth element tri-telluride charge density wave (CDW) compound. The optical spectra are found to display very strong temperature dependence. Besides a large and pronounced CDW energy gap being present already at room temperature as observed in earlier studies, the present measurement revealed the formation of another energy gap at smaller energy scale at low temperature. The second CDW gap removes the electrons near E $_F$ which undergo stronger scattering. The study yields evidence for the presence of multiple CDW orders or strong fluctuations in the light rare-earth element tri-telluride.

Keywords

charge density wave optical conductivity electron emission

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@article{arxiv.1009.2967,
  title  = {Optical spectroscopy study on CeTe$_3$: evidence for multiple charge-density-wave orders},
  author = {B. F. Hu and P. Zheng and R. H. Yuan and T. Dong and B. Cheng and Z. G. Chen and N. L. Wang},
  journal= {arXiv preprint arXiv:1009.2967},
  year   = {2013}
}

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Optical spectroscopy study on CeTe$_3$: evidence for multiple charge-density-wave orders

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