Angle resolved photoemission valence band dispersions E(k) for gaP.
Abstract
We experimentally determined the valence band dispersions E(k) along the symmetry directions ΓKX, ΓX, ΓL using angle-resolved photoemission. ΓX, ΓKX and ΓL have been studied by off-normal emission process with photon energy between 31 eV and 44 eV, while ΓKX has also been studied by normal emission process using photon energy from 31 to 85 eV. The resulting dispersion curves E(k) are compared to pseudopotential calculation. We used a direct transition model and a nearly-free electron final state approximation to interpret the main experimental features.
- Publication:
-
Solid State Communications
- Pub Date:
- October 1984
- DOI:
- 10.1016/0038-1098(84)90713-0
- Bibcode:
- 1984SSCom..52...37S