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Two-step electron tunneling from confined electronic states in a nanoparticle

Filip, LD, Palumbo, M, Carey, JD and Silva, SRP (2009) Two-step electron tunneling from confined electronic states in a nanoparticle PHYSICAL REVIEW B, 79 (24), ARTN 2.

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Abstract

Sequential two-step electron tunneling from nanoparticles has been studied from a transport point of view. A steady-state balance equation for the partial electron currents is derived and solved to obtain the stationary level occupancy, which leads to the overall tunneling current as a function of the applied field. Our model explains the steplike features observed in high field tunneling experiments involving composite cathodes that incorporate electronic quantum-confinement regions. In order to assess the validity of our model and to show the apparition of the steplike features in field-emission experiments, we have used the usual diode configuration to obtain current-voltage characteristics from a composite cathode. The theoretical model presented in this paper shows qualitative agreement with the experimental data.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Authors :
AuthorsEmailORCID
Filip, LDUNSPECIFIEDUNSPECIFIED
Palumbo, MUNSPECIFIEDUNSPECIFIED
Carey, JDUNSPECIFIEDUNSPECIFIED
Silva, SRPUNSPECIFIEDUNSPECIFIED
Date : 1 June 2009
Identification Number : 10.1103/PhysRevB.79.245429
Uncontrolled Keywords : Science & Technology, Physical Sciences, Physics, Condensed Matter, Physics, cathodes, nanoparticles, tunnelling, FIELD-EMISSION, OSCILLATIONS, FILMS, field emission characteristics, quantum tunnelling nanoparticle, supply functions, current tranport and equilbrium
Related URLs :
Additional Information : Copyright 2009 The American Physical Society.
Depositing User : Symplectic Elements
Date Deposited : 14 Jan 2013 10:11
Last Modified : 18 Feb 2015 14:35
URI: http://epubs.surrey.ac.uk/id/eprint/745441

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