STRUCTURAL TRANSFORMATION OF THE SI(111)(7X7)-TO-(3X1) SURFACE-STRUCTURE INDUCED BY SODIUM

Authors
JEON D HASHIZUME T WANG X MOTAI K SAKURAI T
Citation
D. Jeon et al., STRUCTURAL TRANSFORMATION OF THE SI(111)(7X7)-TO-(3X1) SURFACE-STRUCTURE INDUCED BY SODIUM, Applied surface science, 67(1-4), 1993, pp. 257-260
Citations number
12
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
Applied surface science → ACNP
ISSN journal
01694332
Volume
67
Issue
1-4
Year of publication
1993
Pages
257 - 260
Database
ISI
SICI code
0169-4332(1993)67:1-4<257:STOTSS>2.0.ZU;2-C
Abstract
A field ion-scanning tunneling microscope has been used to study the s tructure of the Na-induced Si(111)(3 x 1) surface. The STM images show ed that the entire Si surface was uniformly covered with a single laye r of the Na(3 x 1) structure. Upon further Na deposition onto this sur face a well ordered Na multilayer was formed via Stranski-Krastanov gr owth mode. Tunneling spectroscopy performed on the surfaces at various Na coverages revealed that the first Na layer was insulating, but the insulator-metal transition of the Na overlayer occurred in the second layer.