Open AccessAn Incommensurate Reconstruction Studied with Scanning Tunnelling Microscopy and Surface X-Ray Diffraction
Author(s) -
B. Aufray,
Mats Göthelid,
J. M. Gay,
C. Mottet,
E. Landemark,
Gerald Falkenberg,
L. Lottermoser,
L. Seehofer,
Robert L. Johnson
Publication year - 1997
Publication title -
microscopy, microanalysis, microstructures
Language(s) - English
Resource type - Journals
eISSN - 2777-3558
pISSN - 1154-2799
DOI - 10.1051/mmm:1997116
Subject(s) - x ray crystallography , diffraction , scanning tunneling microscope , surface reconstruction , materials science , microscopy , quantum tunnelling , x ray , crystallography , optics , surface (topology) , mineralogy , chemistry , nanotechnology , physics , optoelectronics , geometry , mathematics
We present the first results of a combined scanning tunneling microscopy (STM) and surface X-ray diffraction (SXRD) study of Ag monolayer deposited on Cu(111). The STM images of Ag monolayer show a periodic frame of triangles, 4 or 5 atomic row wide with 1 or 3 atoms protruding in the centre respectively. Away from the triangles, the corrugation of the atomic rows is about 0.05 A while the depth of the triangles is about 0.5 A. SXRD shows an "average" Ag surface unit cell (9.43 x 9.43) times the Cu(111) surface unit cell without rotation in good agreement with STM observations