Direct methods determination of the Si(111)-(6×6)Au surface structure

Autor:	D. Grozea, E. Landree, Robert L. Johnson, Mourits Nielsen, Robert Feidenhans'l, Laurence D. Marks
Rok vydání:	1998
Předmět:	Diffraction Silicon chemistry.chemical_element Trimer Surfaces and Interfaces Condensed Matter Physics Surfaces Coatings and Films Crystallography Transition metal chemistry Direct methods Phase (matter) X-ray crystallography Monolayer Materials Chemistry
Zdroj:	Surface Science. 418:32-45
ISSN:	0039-6028
Popis:	The atomic structure of the Au 6×6 on Si(111) phase has been determined using direct methods and surface X-ray diffraction data. This surface structure is very complicated, with 14 independent gold atoms, relaxations in 24 independent silicon sites and three partially occupied gold sites. In one sense the structure can be described as microdomains of the parent 3 × 3 Au on Si(111) structure. A better description is in terms of a tiling of incomplete pentagonal and trimer units, essentially a pseudo-pentagonal glass. In terms of these structural units it is possible to explain all the gold structures in the coverage range 0.8–1.5 monolayers as pseudo-glasses with strong short-range order but varying degrees of long-range order.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::42c5d54eb3c33f53b9ce44cdd6e86d9b https://doi.org/10.1016/s0039-6028(98)00660-8 Zobrazit plný text záznamu Full Text from ScienceDirect