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Controlling electron transfer processes on insulating surfaces with the non-contact atomic force microscope.

Trevethan, T and Shluger, A (2009) Controlling electron transfer processes on insulating surfaces with the non-contact atomic force microscope. Nanotechnology, 20 (26).

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Abstract

We present the results of theoretical modelling that predicts how a process of transfer of single electrons between two defects on an insulating surface can be induced using a scanning force microscope tip. A model but realistic system is employed which consists of a neutral oxygen vacancy and a noble metal (Pt or Pd) adatom on the MgO(001) surface. We show that the ionization potential of the vacancy and the electron affinity of the metal adatom can be significantly modified by the electric field produced by an ionic tip apex at close approach to the surface. The relative energies of the two states are also a function of the separation of the two defects. Therefore the transfer of an electron from the vacancy to the metal adatom can be induced either by the field effect of the tip or by manipulating the position of the metal adatom on the surface.

Item Type: Article
Authors :
NameEmailORCID
Trevethan, Tt.trevethan@surrey.ac.ukUNSPECIFIED
Shluger, AUNSPECIFIEDUNSPECIFIED
Date : 1 July 2009
Identification Number : 10.1088/0957-4484/20/26/264019
Uncontrolled Keywords : Computer Simulation, Electrons, Magnesium Oxide, Microscopy, Atomic Force, Models, Chemical, Oxygen, Palladium, Platinum, Thermodynamics, Vacuum
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:35
Last Modified : 17 May 2017 15:04
URI: http://epubs.surrey.ac.uk/id/eprint/835936

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