Type

Journal Article

Authors

Greg Hughes
L. Koenders
P. Moriarty

Subjects

Physics

Topics
physics room temperature tunneling microscopy surface sulfur surface reconstruction low energy electron diffraction high resolution

Sulfur-induced c(4×4) reconstruction of the Si(001) surface studied by scanning tunneling microscopy (1993)

Abstract Scanning tunneling microscopy and low-energy electron diffraction have been used to study the adsorption and subsequent thermal desorption of molecular sulfur from the Si(001) surface. Room-temperature adsorption of sulfur resulted in the formation of an overlayer, displaying a high density of vacancies or defects, with the underlying Si(001) surface retaining the (2×1) reconstruction. Annealing this surface to 325 °C leads to the desorption of the sulfur overlayer and the appearance of coexisting c(4×4) and (2×1) surface reconstructions. Our data suggest that the c(4×4) reconstruction is an adsorbate-induced structure in which the sulfur creates defects during the desorption process. High-resolution filled- and empty-state images of the c(4×4) surface lead us to propose a missing-dimer defect model for this reconstruction.
Collections Ireland -> Dublin City University -> Publication Type = Article
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Science and Health
Ireland -> Dublin City University -> Subject = Physical Sciences: Physics
Ireland -> Dublin City University -> Subject = Physical Sciences
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Science and Health: School of Physical Sciences

Full list of authors on original publication

Greg Hughes, L. Koenders, P. Moriarty

Experts in our system

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Greg Hughes
Dublin City University
Total Publications: 29