Electron field emission from nanocarbons: A two-process model

Altman, Igor S.; Pikhitsa, Peter V.; Choi, Mansoo
February 2004
Applied Physics Letters;2/16/2004, Vol. 84 Issue 7, p1126
Academic Journal
We show that the conventional consideration of the electron-field emission from nanocarbons cannot explain the experimentally observed results. We suggest a mechanism of the field emission occurrence from nanocarbons that can solve the existing puzzles. This mechanism implies two successive processes: (1) Tunneling through the low-energy barrier from the metallic region into the semiconducting region under the external macroscopic electric field and (2) tunneling through the high-energy barrier from the semiconducting region into a vacuum under the Coulomb field of an additional electron appearing in the first process. © 2004 American Institute of Physics.


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