Dynamical Study of Single Silver Atoms on Si(111)-$7 \times 7$ Surfaces

スポンサーリンク

概要

• 論文の詳細を見る

• The dynamics and interactions of silver atoms on Si(111)-$7 \times 7$ surfaces are investigated using variable-temperature scanning tunneling microscopy (STM). The activation energies and pre-exponential factors upon the room temperature are estimated to be 0.81 and 0.9 eV, and $10^{9.65}$ and $10^{10.68}$ for the hopping out of the faulted halves and for hopping out of unfaulted halves, respectively. The behavior exhibited by two silver atoms that jump into a single half-unit cell is also addressed. Details of the tracking of single silver atoms that hop within a $7 \times 7$ half-unit cell are reexamined at ${\sim}80$ K using low-temperature STM. The analytical data revealed that silver atoms diffuse within a $7 \times 7$ unit cells via a corner adatom–rest atom–center adatom–rest atom–corner adatom diffusion pathway in a faulted half under the stress associated with $7 \times 7$ reconstruction.

• 2006-03-15

著者

• Ho Mon-shu

  Department Of Physics Center Of Nanoscience And Nanotechnology National Chung Hsing University

• Tsong Tien-Tzou

  Institute of Physics, Academia Sinica, Taipei 115, Taiwan

• Su Chih-Chuan

  Department of Physics, Center of Nanoscience and Nanotechnology, National Chung Hsing University, Taichung 402, Taiwan

• Ho Mon-Shu

  Department of Physics, Center of Nanoscience and Nanotechnology, National Chung Hsing University, Taichung 402, Taiwan

関連論文

• Experimental Determination of Mechanical Properties of Electroformed Ni–Fe Microstructures
• Dynamical Study of Single Silver Atoms on Si(111)-$7 \times 7$ Surfaces
• Determining the Thickness of Pb Film Similar to Bulk with Energy Dispersion Derived from Quantum Well States
• Applications of a Novel Microheater in Micromolding

スポンサーリンク