摘要
The reconstruction process of the Si(111)√3 ×√3 R30°-Ag surface is studied by using a scanning tunnelling microscope at 78K.By applying a strong interaction between the tip and the surface,a tip-induced reconstruction corresponding to the mergence of two Si(111)√3 ×√3 R30°-Ag domains is observed.Based on the inequivalent trimers(IET)model,this reconstruction process is attributed to a transition between the clockwise and counterclockwise IET domains.With this transition,the honeycomb-chained-trimer Si(111)√3 ×√3 R30°-Ag anti-phase boundary disappears and changes to the IET structure.
作者
LI Bin
ZENG Chang-Gan
WANG Hai-Qian
WANG Bing
HOU Jian-Guo
李斌;曾长淦;王海千;王兵;侯建国(Structure Research Laboratory,University of Science and Technology of China,Hefei 230026;Open Laboratory of Bond Selective Chemistry,University of Science and Technology of China,Hefei 230026)
基金
Supported by the National Natural Science Foundation of China under Grant Nos.5997203 and G1999075305
the Hong Kong'Qiu Shi'Foundation.
