X-ray scattering for the atomic structure of a barium-induced Si(111)-3 x 2 surface
SCIE
SCOPUS
- Title
- X-ray scattering for the atomic structure of a barium-induced Si(111)-3 x 2 surface
- Authors
- Kim, ND; Kang, TS; Je, JH; Kim, HJ; Noh, DY; Chung, JW
- Date Issued
- 2008-04
- Publisher
- SPRINGER
- Abstract
- We have investigated the atomic arrangement of a barium (Ba)-induced Si(111)-3x2 surface by using surface-sensitive synchrotron X-ray scattering. In-plane fractional-order reflections obtained from three rotational domains of 3x1 symmetry have been used to examine several competing structural models including the honeycomb-chain-channel (HCC) and the double-pi-bonded chain (D pi C) models. By fitting two different data sets, both the goodness-of-the fits chi(2) and the residuum R-factor strongly favor the HCC over the D pi C model. We conclude that a Ba-paired HCC structure with a 1/3 monolayer of Ba coverage best describes the Ba-induced 3 x 2 surface with a Ba-Ba interatomic spacing d=1.93 angstrom.
- Keywords
- ELECTRONIC-STRUCTURE; RECONSTRUCTION; DIFFRACTION; MODEL; MG; METALS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22926
- DOI
- 10.1007/s00339-007-4368-z
- ISSN
- 0947-8396
- Article Type
- Article
- Citation
- APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, vol. 91, no. 1, page. 53 - 57, 2008-04
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