Evidence for a Quasi-One-Dimensional Charge Density Wave in CuTe by Angle-Resolved Photoemission Spectroscopy
Year: 2018
Type: article
Abstract: We report the electronic structure of CuTe with a high charge density wave (CDW) transition temperature T_{c}=335 K 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 p_{x} 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.
Source: Physical Review Letters
Institutions: State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Hiroshima University, Research Institute for Synchrotron Radiation Science, Hiroshima University, Lawrence Berkeley National Laboratory, Advanced Light Source, Collaborative Innovation Center of Quantum Matter
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2897536699