| Issue |
Europhys. Lett.
Volume 49, Number 3, February I 2000
|
|
|---|---|---|
| Page(s) | 357 - 361 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2000-00156-5 | |
| Published online | 01 September 2002 | |
The CDW structure of the m = 4 phosphate bronze 
Laboratory of Crystallography, University of Bayreuth -
D-95440 Bayreuth, Germany
Corresponding author: smash@uni-bayreuth.de
Received:
21
June
1999
Accepted:
17
November
1999
Low-temperature X-ray diffraction with synchrotron radiation
was used to study the CDW structure of the phosphate bronze
(PO2)4(WO3)
with m=4.
The CDW state at 
can be described as a 2-dimensional,
incommensurately modulated structure with wave vectors
and 
.
The second type of modulation is found to comprise the
mixed second-order satellites 
at (0.340 (5), 0, 0).
Atomic displacements are mainly found on the wolfram atoms,
whereby a tendency is observed for the CDW to concentrate
in the middle of the WO3 layers.
The consequences are derived for the interpretation of the
CDW modulations in this homologous series of compounds.
PACS: 71.45.Lr – Charge-density-wave systems / 61.44.Fw – Incommensurate crystals / 64.70.Rh – Commensurate-incommensurate transitions
© EDP Sciences, 2000
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