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High-energy electron-energy-loss study of sodium-tungsten bronzes.

Abstract:

Single-crystal metallic cubic sodium-tungsten bronzes NaxWO3 (x0.25) and NaxTayW1-yO3 (x-y=0.42) and monoclinic reduced WO3-δ have been investigated by high-energy electron-energy-loss spectroscopy (EELS) in transmission. For all electron densities the volume plasmon dispersion appears to be positive quadratic in momentum transfer q. The dispersion coefficient is much smaller than that predicted from the random-phase approximation for one isotropic parabolic band. This deviation can be reduce...

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Publication status:
Published

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Publisher copy:
10.1103/physrevb.51.10320

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Journal:
Physical review. B, Condensed matter
Volume:
51
Issue:
16
Pages:
10320-10335
Publication date:
1995-04-05
DOI:
EISSN:
1095-3795
ISSN:
0163-1829
URN:
uuid:969042d0-d25d-4244-aaac-c40f2c6e78fb
Source identifiers:
36297
Local pid:
pubs:36297
Language:
English

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