| DOI | Resolve DOI: https://doi.org/10.1103/PhysRevB.55.5376 |
|---|
| Author | Search for: Tian, Z.1; Search for: Dharma-Wardana, M. W. C.1; Search for: Lu, Z. H.1; Search for: Cao, R.; Search for: Lewis, L. J. |
|---|
| Affiliation | - National Research Council Canada. NRC Institute for Microstructural Sciences
|
|---|
| Format | Text, Article |
|---|
| Subject | core-level photoemission spectroscopy; sulphur-passivated InP(001); annealing |
|---|
| Abstract | Core-level photoemission spectroscopy and theoretical predictions of structure and spectra are used to study the fully S-covered InP(001) surface and its evolution during annealing. The theory predicts a number of stable structures besides the lowest-energy ground state which is the fully S-covered (2×2)-reconstructed structure, where the surface has two types of S atoms. On annealing, a fascinating sequence of structures unfolds from the fully S-covered ground state as the other stable structures become energetically accessible. The surface S atoms exchange with bulk P atoms on annealing, forming new strong S–P bonds while dissociating preexisting S–S dimers. The S–P bonds are tilted with the P atoms just above the surface and there is only one type of S atom in the structure. The measured excitation energies and spectra agree with theoretical predictions of the core-level spectra for the (2×2) reconstruction and its evolution to partial S coverages. We conclude that the annealed surface around 700 K is most likely to be a (2×2) reconstructed surface with the surface cell containing two S–P bonds, with just one type of S atom. |
|---|
| Publication date | 1997-02-15 |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| NPARC number | 12328331 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | 6c66e0d3-c547-42ed-b8f5-fa2bf766c075 |
|---|
| Record created | 2009-09-10 |
|---|
| Record modified | 2020-03-20 |
|---|
