Scanning tunneling microscopy study of the CeTe3 charge density wave

A. Tomic, Zs Rak, J. P. Veazey, C. D. Malliakas, S. D. Mahanti, Mercouri G Kanatzidis, S. H. Tessmer

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We have studied the nature of the surface charge distribution in CeTe3. This is a simple cleavable layered material with a robust one-dimensional incommensurate charge density wave (CDW). Scanning tunneling microscopy (STM) has been applied on the exposed surface of a cleaved single crystal. At 77 K, the STM images show both the atomic lattice of surface Te atoms arranged in a square net and the CDW modulations oriented at 45° with respect to the Te net. Fourier transform of the STM data shows Te square lattice peaks and peaks related to the CDW oriented at 45° to the lattice peaks. In addition, clear peaks are present, consistent with subsurface structure and wave-vector mixing effects. These data are supported by electronic structure calculations, which show that the subsurface signal most likely arises from a lattice of Ce atoms situated 2.53 below the surface Te net.

Original languageEnglish
Article number085422
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number8
DOIs
Publication statusPublished - 2009

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Charge density waves
Scanning tunneling microscopy
scanning tunneling microscopy
Atoms
Charge distribution
Surface charge
Electronic structure
Fourier transforms
Modulation
Single crystals
charge distribution
atoms
electronic structure
modulation
single crystals

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Scanning tunneling microscopy study of the CeTe3 charge density wave. / Tomic, A.; Rak, Zs; Veazey, J. P.; Malliakas, C. D.; Mahanti, S. D.; Kanatzidis, Mercouri G; Tessmer, S. H.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 79, No. 8, 085422, 2009.

Research output: Contribution to journalArticle

Tomic, A. ; Rak, Zs ; Veazey, J. P. ; Malliakas, C. D. ; Mahanti, S. D. ; Kanatzidis, Mercouri G ; Tessmer, S. H. / Scanning tunneling microscopy study of the CeTe3 charge density wave. In: Physical Review B - Condensed Matter and Materials Physics. 2009 ; Vol. 79, No. 8.
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