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Figure 8
(a) Valence-band photoemission spectrum with s-polarization geometry for the voltage-applied NiO and normalized spectrum of Pt (top). The difference is shown at the bottom with the spectrum of the as-grown NiO film. (b) Pt 4p3/2 core-level photoemission spectra. (c) SEM image for the voltage-applied NiO. The dashed circle indicates one of the spots touched by the Pt point contact, with a focused SEM image shown in (d).

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SYNCHROTRON
RADIATION
ISSN: 1600-5775
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