Abstract
We report the electronic structure of CuTe with a high charge density wave (CDW) transition temperature by angle-resolved photoemission spectroscopy. An anisotropic charge density wave gap with a maximum value of 190 meV is observed in the quasi-one-dimensional band formed by Te orbitals. The CDW gap can be filled by increasing the temperature or electron doping through in situ potassium deposition. Combining the experimental results with calculated electron scattering susceptibility and phonon dispersion, we suggest that both Fermi surface nesting and electron-phonon coupling play important roles in the emergence of the CDW.
- Received 12 June 2018
- Revised 23 August 2018
- Corrected 8 July 2019
DOI:https://doi.org/10.1103/PhysRevLett.121.206402
© 2018 American Physical Society
Physics Subject Headings (PhySH)
Corrections
8 July 2019
Correction: The previously published Figure 4(a) contained an axis label error and has been replaced.