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2D-SURFACE PHONONS IN HIGH-RESOLUTION ELECTRON-ENERGY-LOSS SPECTRA OF METALLIC OXIDES

Abstract:

Surface phonon features in high-resolution electron-energy-loss (HREEL) spectra of the metallic tungsten bronze oxide Na0.7WO3 are much weaker than for insulating WO3. Models based on the bulk dielectric function ε{lunate}(ω) are unable to rationalise these spectra, but a simple two-layer model involving an unscreened surface dielectric layer is shown to account for both the intensities of the metallic phonons and their energies relative to those for WO3. The sensitivity of HREELS to details ...

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Publication status:
Published

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Authors


PEPLINSKII, F More by this author
Journal:
SURFACE SCIENCE
Volume:
141
Issue:
1
Pages:
13-30
Publication date:
1984
DOI:
ISSN:
0039-6028
URN:
uuid:b34ac0a6-7277-4e24-a1b4-cedf64ff7328
Source identifiers:
42301
Local pid:
pubs:42301
Language:
English

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