This is an images showing an artificial nanostructure. 51 Ag atoms have been precisely positioned to form a triangle with a base length of 245 ? 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.
LT-STM by CreaTec.
K.-F. Braun and K.-H. Rieder, Engineering electronic lifetimes in artificial atomic structures, Phys. Rev. Lett. 88 (2002), 096801.