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We have found a new formation procedure of nano-tips, namely field-enhanced diffusion-growth (FDG) method. This method has the advantage of forming the nano-protrusion at room temperature, which is quite different from the conventional method by Binh et al. With field ion microscope, we confirmed that the tip was terminated with either a few atoms or the less in the end. The field emission (FE) electrons...
The changes of atomic structure and the coverage of binary metals (Bi,Sb) at the Si(111) surface induced by thermal annealing have been studied by means of low energy electron diffraction (LEED), Auger electron spectroscopy (AES), and Rutherford backscattering spectrometry (RBS) techniques. It is shown that Bi and Sb form surface alloy of √3x√3 structure. Moreover, coaxial impact-collision ion scattering...
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