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The Shockley-type surface state for the clean and a Xe covered Ag(111) surface is studied with scanning tunneling microscopy and scanning tunneling spectroscopy at a temperature of 5 K. The minimum of the parabolic dispersion shifts from -67 meV below E F =0 for the clean Ag(111) surface to +52 meV with one layer of Xe adsorbed, hence the surface state becomes completely unoccupied after Xe...
We have investigated the system Xe on graphite in the submonolayer coverage regime using scanning tunneling microscopy (STM) at T=5K. The Xe adlayer forms hexagonal domains in a honeycomblike superstructure. Dynamic properties of the domain-walls could be studied for the first time by a series of STM images, revealing a time-dependent overlayer structure with the spontaneous creation and disappearance...
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