1.
Phys Rev Lett
; 84(12): 2642-5, 2000 Mar 20.
Artículo
en Inglés
| MEDLINE
| ID: mdl-11017289
RESUMEN
A low temperature scanning force microscope (SFM) operating in a dynamic mode in ultrahigh vacuum was used to study the Si(111)- (7x7) surface at 7.2 K. Not only the twelve adatoms but also the six rest atoms of the unit cell are clearly resolved for the first time with SFM. In addition, the first measurements of the short range chemical bonding forces above specific atomic sites are presented. The data are in good agreement with first principles computations and indicate that the nearest atoms in the tip and sample relax significantly when the tip is within a few A of the surface.
2.
Phys Rev B Condens Matter
; 52(10): 7311-7321, 1995 Sep 01.
Artículo
en Inglés
| MEDLINE
| ID: mdl-9979674
3.
4.
5.
Phys Rev B Condens Matter
; 47(1): 384-389, 1993 Jan 01.
Artículo
en Inglés
| MEDLINE
| ID: mdl-10004455