Unoccupied surface states on clean and oxygen-covered Cu(110) and Cu(111)
Abstract
The experimentally observed surface states of the adsorbate systems Cu(110)p(2×1)O and Cu(111)/O2 can be simulated by a simple model using a planar-averaged surface barrier. The E(k) dispersion curves of the adsorbate case are obtained from those of the clean-surface case by a systematic downward shift in energy which is achieved, in this particular model, by an outward movement of the barrier by 1-2 a.u.
- Publication:
-
Physical Review B
- Pub Date:
- October 1989
- DOI:
- 10.1103/PhysRevB.40.7487
- Bibcode:
- 1989PhRvB..40.7487C
- Keywords:
-
- 73.20.At;
- Surface states band structure electron density of states