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 effectsl 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.

Rohlfing, M., Palummo, M., Onida, G., Del Sole, R. (2000). Structural and optical properties of the Ge(111)-(2 x 1) surface. PHYSICAL REVIEW LETTERS, 85(25), 5440-5443.

Structural and optical properties of the Ge(111)-(2 x 1) surface

PALUMMO, MAURIZIA;
2000-01-01

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 effectsl 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.
2000
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/03 - FISICA DELLA MATERIA
English
Con Impact Factor ISI
AB-INITIO CALCULATION; DANGLING-BOND BAND; SI(111)2X1 SURFACE; QUASI-PARTICLE; CHAIN MODEL; PSEUDOPOTENTIALS; ABSORPTION; REFLECTIVITY; CLUSTERS; EXCITONS
4
Rohlfing, M., Palummo, M., Onida, G., Del Sole, R. (2000). Structural and optical properties of the Ge(111)-(2 x 1) surface. PHYSICAL REVIEW LETTERS, 85(25), 5440-5443.
Rohlfing, M; Palummo, M; Onida, G; Del Sole, R
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/53462
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