An Electrothermodynamic Analysis of the Field Evaporation in the Configuration of Scanning Tunneling Microscope
LI Zhi-yang1, LIU Wu1, LI Xing-jiao2
1Department of Physics, Huazhong Normal University, Wuhan 430079
2Department of Solid State Electronics, Huazhong University of Science and Technology, Wuhan 430074
An Electrothermodynamic Analysis of the Field Evaporation in the Configuration of Scanning Tunneling Microscope
LI Zhi-yang1;LIU Wu1;LI Xing-jiao2
1Department of Physics, Huazhong Normal University, Wuhan 430079
2Department of Solid State Electronics, Huazhong University of Science and Technology, Wuhan 430074
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].
LI Zhi-yang;LIU Wu;LI Xing-jiao. An Electrothermodynamic Analysis of the Field Evaporation in the Configuration of Scanning Tunneling Microscope[J]. 中国物理快报, 1998, 15(8): 608-610.
LI Zhi-yang, LIU Wu, LI Xing-jiao. An Electrothermodynamic Analysis of the Field Evaporation in the Configuration of Scanning Tunneling Microscope. Chin. Phys. Lett., 1998, 15(8): 608-610.
1998, Vol. 15 
