| DOI | Trouver le DOI : https://doi.org/10.1103/PhysRevB.55.5376 |
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| Auteur | Rechercher : Tian, Z.1; Rechercher : Dharma-Wardana, M. W. C.1; Rechercher : Lu, Z. H.1; Rechercher : Cao, R.; Rechercher : Lewis, L. J. |
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| Affiliation | - Conseil national de recherches du Canada. Institut des sciences des microstructures du CNRC
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| Format | Texte, Article |
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| Sujet | core-level photoemission spectroscopy; sulphur-passivated InP(001); annealing |
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| Résumé | 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. |
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| Date de publication | 1997-02-15 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 12328331 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 6c66e0d3-c547-42ed-b8f5-fa2bf766c075 |
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| Enregistrement créé | 2009-09-10 |
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| Enregistrement modifié | 2020-03-20 |
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