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Sequential tunneling model of field emission through dielectric deposits on nanotips
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Copyright(2003) American Vacuum Society. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Vacuum Society.The following article appeared in Journal of Vacuum Science a Technology B, 21(4),pp.1692-1699 ; 2003 and may be found at http://link.aip.org/link/?jvb/21/1692.
A model of sequential (incoherent) tunneling for the electron field emission was built up in order to explain some peculiarities of the electronic emission from relatively thick dielectric layers covering nanometer-range tips, particularly carbon nanotubes. The emission current as a function of applied voltage, dielectric layer thickness, polarizability, and temperature was computed. Various experimentally detected trends were thereby modeled, leading to the conclusion that incoherent tunneling might be a competitive mechanism for electron field emission from dielectric layers on the tips of nanometer-sized cathodes.
Sequential tunneling model of field emission through dielectric deposits on nanotips
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