Scanning tunneling microscopy study of the CeTe3 charge density wave

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

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8 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 - Mar 18 2009

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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