Structure of Sn/Ge(111) from low-energy electron-diffraction and photoemission studies

S. B. Dicenzo, Peter Bennett, D. Tribula, P. Thiry, G. K. Wertheim, J. E. Rowe

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

High-resolution photoemission measurements (200 250 meV) have been made on Ge 3d and Sn 4d core levels using synchrotron radiation from the National Synchrotron Light Source at Brookhaven National Laboratory. Systematic analysis using nonlinear least-squares fits has shown evidence for three different Ge components and two different Sn components. The selective modification of one Ge component as a function of Sn coverage leads to some quantitative restrictions on structural models for the Sn-induced 7×7 and 5×5 reconstructed superlattices. In particular, simple adatom models, vacancy models, and buckling models are not fully consistent with our results. A multilayer adatom model, such as the tripedal model of Aono et al. [Phys. Rev. Lett. 51, 801 (1983)] is found to be the most plausible one to interpret our results.

Original languageEnglish (US)
Pages (from-to)2330-2337
Number of pages8
JournalPhysical Review B
Volume31
Issue number4
DOIs
StatePublished - 1985
Externally publishedYes

Fingerprint

Low energy electron diffraction
Photoemission
photoelectric emission
electron diffraction
Adatoms
adatoms
energy
Core levels
Superlattices
Nonlinear analysis
buckling
Synchrotron radiation
Synchrotrons
Vacancies
Buckling
Light sources
superlattices
constrictions
Multilayers
synchrotron radiation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Structure of Sn/Ge(111) from low-energy electron-diffraction and photoemission studies. / Dicenzo, S. B.; Bennett, Peter; Tribula, D.; Thiry, P.; Wertheim, G. K.; Rowe, J. E.

In: Physical Review B, Vol. 31, No. 4, 1985, p. 2330-2337.

Research output: Contribution to journalArticle

Dicenzo, S. B. ; Bennett, Peter ; Tribula, D. ; Thiry, P. ; Wertheim, G. K. ; Rowe, J. E. / Structure of Sn/Ge(111) from low-energy electron-diffraction and photoemission studies. In: Physical Review B. 1985 ; Vol. 31, No. 4. pp. 2330-2337.
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