An Electrothermodynamic Analysis of the Field Evaporation in the Configuration of Scanning Tunneling Microscope
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Abstract
This paper presents an electrothermodynamic(Born-Haber-type) analysis of field evaporation in the configuration of scanning tunneling microscope, in which the adatom is only partially ionized and evaporated to counter electrode. As a result a formula was derived, which employed a so-called effective binding energy Aeff. The calculated evaporation field for Au-1, at a tip-sample distance of d = 7.23Å and an evaporation rate of 1011s-1, is 0.6 V/Å, which agrees well with Chang's experiment Phys. Rev.Lett.72(1994) 574.
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