Abstract
We present a study of charge density wave (CDW) ordering in at room temperature using a scanning tunneling microscope and Raman spectroscopy. Two characteristic CDW ordering wave vectors obtained from the Fourier analysis are assessed to be and where is the reciprocal lattice vector. The scanning tunneling spectroscopy measurements, along with inelastic light (Raman) scattering measurements, show a CDW gap of approximately 0.37 eV. In addition to the CDW modulation, we observe an organization of the Te sheet atoms in an array of alternating V- and N-shaped groups along the CDW modulation, as predicted in the literature.
- Received 5 July 2016
- Revised 8 September 2016
DOI:https://doi.org/10.1103/PhysRevB.94.165132
©2016 American Physical Society