Charge storage in Sn O2 nanoparticles: A method and mechanism for charge writing/erasing

M. W. Penny, M. R. Brown, T. G.G. Maffeïs, P. Rees, S. P. Wilks, H. S. Ferkel

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

In this work, we present and explain evidence of a charge confinement phenomena exhibited by Sn O2 nanoparticles. By applying a voltage pulse from the scanning tunneling microscope (STM) tip or momentarily increasing the gap voltage, charged features can be written on the surface. The voltage dependence of the apparent height of the features, and current imaging tunneling spectroscopy experiments, supports the charge confinement theory put forward. This is substantiated by a numerical model illustrating how charge is confined in individual nanoparticles, and is used to explain the observations of STM experiments.

Original languageEnglish (US)
Article number163108
JournalApplied Physics Letters
Volume91
Issue number16
DOIs
StatePublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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