Structural and optical properties of the Ge(111)-(2 x 1) surface.
Phys Rev Lett
; 85(25): 5440-3, 2000 Dec 18.
Article
em En
| MEDLINE
| ID: mdl-11136016
ABSTRACT
We study the two lowest-energy isomers of the Ge(111)-(2 x 1) surface, by a state-of-the-art first-principles calculation of their optical spectra, including the electron-hole interaction effects. A comparison of our results with the available experimental data suggests that, at difference with the silicon case, the stablest isomer differs from the standard "buckled Pandey chains" reconstruction. This conclusion is supported by accurate total-energy results.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Alemanha