LOW-TEMPERATURE RECONSTRUCTION PATHWAY TO THE SI(111)(ROOT-3X-ROOT-3)R30-DEGREES-AG INTERFACE

Citation
Jm. Carpinelli et Hh. Weitering, LOW-TEMPERATURE RECONSTRUCTION PATHWAY TO THE SI(111)(ROOT-3X-ROOT-3)R30-DEGREES-AG INTERFACE, Physical review. B, Condensed matter, 53(19), 1996, pp. 12651-12654
Citations number
26
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
01631829
Volume
53
Issue
19
Year of publication
1996
Pages
12651 - 12654
Database
ISI
SICI code
0163-1829(1996)53:19<12651:LRPTTS>2.0.ZU;2-6
Abstract
Using the spectroscopic capabilities of a scanning tunneling microscop e, we identified and investigated a low-temperature reconstruction pat hway for forming Si(111)(root 3 x root 3)R30 degrees-Ag from the Si(11 1)3 x 1-Ag interface. A metastable intermediate phase consisting of on e-dimensional atom chains atop the Si(111)3 x 1-Ag reconstruction stab ilizes locally. The density of states at the chains indicates a Ag-Si bonding configuration similar to that of the (root 3 x root 3)R30 degr ees reconstruction. We propose a mechanism for the (3 x 1) to (root 3 x root 3)R30 degrees phase transformation at low temperature.