Author/Authors :
Urbieta، نويسنده , , A. F. Schulte، نويسنده , , K. and Grandidier، نويسنده , , B. and Deresmes، نويسنده , , D. and Erwin، نويسنده , , S.C. and Stiévenard، نويسنده , , D.، نويسنده ,
Abstract :
The ground state of the Ag/Si(1 1 1)-(3 × 1) has been investigated by low temperature scanning tunneling microscopy (STM) and density-functional theory. The Fourier transform of the STM image reveals a (6 × 2) reconstruction, which is theoretically found to yield a reconstruction with lower energy than the (3 × 1). The most stable (6 × 2) structural model leads to excellent correspondence between experimental and simulated STM images, and reveals a dimerization of the silver atoms in the channels formed by neighbouring honeycomb Si chains.
Keywords :
Silicon , silver , Scanning tunneling microscopy , surface reconstruction , Density functional theory
