Based on energy dependent Green's functions, we developed a simulation for the microscopic part of a scanning tunnelling microscope. This simulation is capable of reproducing STM images of simple metallic surfaces, quantum corrals and quantum mirages. The simulation is based on a scattering theory, which has been established to deal adequately with localised sources. This theory permits a completely three dimensional description of an STM. Furthermore, this framework can be extended in several ways. For instance, it can take into account multipole sources. This enables a more realistic simulation of experimental pictures, since the high resolution of an STM achieved with e.g. tungsten tips is attributed to the fact that the electrons originate from d orbitals. In addition, the theory can also be extended to describe the anomalous scattering properties of Kondo adatoms. Thus the simulation can also reproduce the recent experimental results observed in the Kondo mirage.
«Based on energy dependent Green's functions, we developed a simulation for the microscopic part of a scanning tunnelling microscope. This simulation is capable of reproducing STM images of simple metallic surfaces, quantum corrals and quantum mirages. The simulation is based on a scattering theory, which has been established to deal adequately with localised sources. This theory permits a completely three dimensional description of an STM. Furthermore, this framework can be extended in several w...
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