Copper-based delafossite oxides are excellent candidates for the p-type transparent conducting oxide (TCO), which is essential in realizing transparent semiconductor applications. Using angle-resolved photoemission spectroscopy (ARPES), we report the low-energy electronic structure of CuAlO2. We found that the band structure near the valence band top is characterized by hole bands with their maxima along the Brillouin zone boundary. Furthermore, the effective masses along the Γ–M and Γ–K directions were found to be (0.6 ± 0.1) m0 and (0.9 ± 0.1) m0, respectively, which impose an important benchmark against the existing band calculations.
|Number of pages||6|
|Journal||Current Applied Physics|
|Publication status||Published - 2022 Jul|
Bibliographical noteFunding Information:
The work performed at the Advanced Light Source was supported by the US Department of Energy, Office of Basic Energy Sciences , under Contract No. DE-AC02-05CH11231 . M.S. was funded by a scholarship ( JS3809 ) from the Ministry of Higher Education of Egypt.
© 2022 Korean Physical Society
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Physics and Astronomy(all)