Structural and Electronic Properties of Cobalt Germanide Islands on Ge(100)

Structural and Electronic Properties of Cobalt Germanide Islands on Ge(100)

The structure and electronic properties of cobalt germanide islands were studied by scanning tunneling microscopy (STM). We found that cobalt-rich surfaces (C-surface) and germanium-rich surfaces (G-surface) coexisted in the islands. Scanning tunneling spectroscopy (STS) confirmed that both surfaces...

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Veröffentlicht in:Journal of physical chemistry. C 2010-05, Vol.114 (19), p.8992-8996
Hauptverfasser: Choi, Junghun, Lim, Do Kyung, Kim, Youngwoo, Kim, Sehun
Format: Artikel
Sprache:eng
Schlagworte:
C: Surfaces, Interfaces, Catalysis
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Zusammenfassung:The structure and electronic properties of cobalt germanide islands were studied by scanning tunneling microscopy (STM). We found that cobalt-rich surfaces (C-surface) and germanium-rich surfaces (G-surface) coexisted in the islands. Scanning tunneling spectroscopy (STS) confirmed that both surfaces displayed metallic characteristics. Structural models are suggested based on the bias-dependent STM images.
ISSN:1932-7447
1932-7455
DOI:10.1021/jp100694s