Atomic scale evidence for faceting stabilization of a polar oxide surface
Autor(en): | Ostendorf, Frank Torbruegge, Stefan Reichling, Michael |
Stichwörter: | 10(1)OVER-BAR0; ELECTRONIC-STRUCTURE; HYDROGEN; Materials Science; Materials Science, Multidisciplinary; Physics; Physics, Applied; Physics, Condensed Matter; STABILITY; STEPS; ZNO | Erscheinungsdatum: | 2008 | Herausgeber: | AMER PHYSICAL SOC | Journal: | PHYSICAL REVIEW B | Volumen: | 77 | Ausgabe: | 4 | Zusammenfassung: | By highest-resolution dynamic scanning force microscopy operated in the non-contact mode, we reveal the complex stabilization mechanism of polar zinc-terminated ZnO(0001). The nanoscopic and atomic structures unveiled corroborate a model of stabilization via triangular structures. High-temperature preparation (T > 1300 K) yields a phase with an additional stabilization by faceting in the form of highly ordered step arrays. The terraces between steps are partly covered with triangular reconstructions exhibiting exclusively {10 (1) over bar0} nanofacets on step edges. Both mechanisms together allow a complete stabilization of the surface without the involvement of adsorbates. |
ISSN: | 24699950 | DOI: | 10.1103/PhysRevB.77.041405 |
Zur Langanzeige
Seitenaufrufe
1
Letzte Woche
0
0
Letzter Monat
0
0
geprüft am 19.05.2024