Author/Authors :
Sumitani، نويسنده , , Kazushi and Masuzawa، نويسنده , , Kosuke and Hoshino، نويسنده , , Takashi and Yoshida، نويسنده , , Ryuji and Nakatani، نويسنده , , Sinichiro and Takahashi، نويسنده , , Toshio and Tajiri، نويسنده , , Hiroo and Akimoto، نويسنده , , Koichi and Sugiyama، نويسنده , , Hiroshi and Zhang، نويسنده , , Xiao-Wei and Kawata، نويسنده , , Hiroshi، نويسنده ,
Abstract :
The surface structure of Si(1 1 1)–6 × 1-Ag was investigated using surface X-ray diffraction techniques. By analyzing the CTR scattering intensities along 00 rod, the positions of the Ag and reconstructed Si atoms perpendicular to the surface were determined. The results agreed well with the HCC model proposed for a 3 × 1 structure induced by alkali-metals on a Si(1 1 1) substrate. The heights of the surface Ag and Si atoms did not move when the surface structure changed from Si(1 1 1)–√3 × √3-Ag to Si(1 1 1)–6 × 1-Ag by the desorption of the Ag atoms. From the GIXD measurement, the in-plane arrangement of the surface Ag atoms was determined. The results indicate that the Ag atoms move large distances at the phase transition between the 6 × 1 and 3 × 1 structures.
Keywords :
1-Ag surface , phase transition , × , Surface X-ray diffraction , Si(1 , 1 , Structural analysis , Honeycomb-chain-channel structure , 1)–6
