期刊
PHYSICAL REVIEW LETTERS
卷 88, 期 9, 页码 -出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.88.096801
关键词
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By means of atomic manipulation, 51 Ag atoms have been precisely positioned to form a triangle with a base length of 245 Angstrom on a Ag(111) substrate. The scattering of the surface electrons at these adatoms results in a complex interference pattern. Spectroscopic data and dI/dV maps taken inside the triangle have been quantitatively evaluated by multiple scattering calculations of the wave pattern. Adjustment of the scattering parameters to the data yields the properties of the scatterers and the electron lifetimes, The experimental results for the electron lifetimes deviate from a (E - E-F)(-2) dependence and reflect the electronic band structure at the surface as well as the local influence of the triangle.
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