Measurement of the Polarizabilities and Field Evaporation Rates of Individual Tungsten Atoms

摘要: The relative field evaporation rates of tungsten kink site atoms at (110) plane edges and the absolute individual adatoms on planes have been measured covering nine orders magnitude. From experimental data, effective polarizabilities are found to be 4.6 ± 0.6 6.8 ± 1.0 A3, respectively. A theoretical consideration is given explain why polarizability metal surface depends atom‐to‐surface mirror distance, therefore atomic sites. calculation also reveals a first power dependent energy level shift, which upon distance. It further shown that classical image potential no longer holds distance smaller than 1 from surface.