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Do we know the true structure of Ge(111)c(2x8) ?

Contributors

Takeuchi, Noboru; Selloni, Annabella; Tosatti, Erio

Published in

Physical review letters, vol. 69, no. 4, p. 648-651

Publication date

1992

Abstract

We present the first ab initio determination of the surface structure and electronic properties of Ge(111)c(2×8). New features emerge, in addition to the basic adatom–rest-atom architecture. In agreement with LEED, which shows weak but nonvanishing quarter-order reflections, we find that an asymmetry is present in the surface unit cell, related to a small buckling between the two rest atoms, as well as to in-plane asymmetries of the rest atoms, adatoms, and first bilayer atoms. This inequivalance also produces a splitting of both the rest-atom and the adatom dangling-bond states, which explains the difference in their apparent heights as seen recently with scanning tunneling microscopy.

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

TAKEUCHI, Noboru, SELLONI, Annabella, TOSATTI, Erio. Do we know the true structure of Ge(111)c(2x8) ? In: Physical review letters, 1992, vol. 69, n° 4, p. 648–651. doi: 10.1103/PhysRevLett.69.648

Main files (1)

Article (Published version)

Identifiers

Additional URL for this publication

http://prola.aps.org/pdf/PRL/v69/i4/p648_1

Journal ISSN

0031-9007
712views
455downloads

Technical informations

Creation

21/09/2009 16:09:44

First validation

21/09/2009 16:09:44

Update

14/03/2023 15:12:26

Status update

14/03/2023 15:12:26

Last indexation

29/10/2024 12:05:11
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