The initial stage of Au adsorption onto a Si (111) surface (< 0.2 ML) is studied by scanning tunneling microscopy (STM). Au is deposited at room temperature, and then the sample is annealed at 700°c. At the very early stage of Au adsorption, a Au-adsorbed 5 × structure is found not to break a 7 × 7 structure. By increasing the amount of adsorbed Au, the Si substrate itself shows a 5 × structure. Rows of the Au-adsorbed 5 × structure are observed to have grown from the lower side of steps.
|ジャーナル||Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures|
|出版ステータス||Published - 1991 3月|
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