Direct measurement of field effects on surface diffusion

Influence of dimer buckling on dimer diffusion: A scanning tunneling microscopy study

“…The influence of a scanning tip on the diffusion of a Si dimer was shown to be very small in tracking tunneling microscopy. 16 This method keeps the scanning tip in close proximity of the diffusing dimer whereas in the measurements described in this communication the tip was only close to the dimer for about 2% of the time, reducing its influence even further. Figure 1 shows two images of the same Ge ad-dimer diffusing at room temperature along a substrate dimer row on Ge͑001͒ in an area free of defects that could disturb its motion.…”

Quantum Dynamical Approach to Ultrafast Molecular Desorption from Surfaces

“…51,52 Apart from switching and desorption, there are a number of other processes, which can be triggered by an STM. 53 The vibrational excitation of adsorbates by inelastically tunneling electrons is used in scanning tunneling spectroscopy (STS).…”

Direct Observation of Misfit Dislocation Glide on Surfaces

“…The STM tip is known to modify adsorbate diffusion on surfaces [11][12][13]. This effect is used for atomic scale [14,15] nipulation.…”