Journal
PHYSICAL REVIEW LETTERS
Volume 86, Issue 22, Pages 5100-5103Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.5100
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The electronic structure of the charge density wave (CDW) bronze (PO2)(4)(WO3)(2m), m = 4, is determined using ab initio density functional theory. The calculation shows that the Fermi surface (FS) consists in the superposition of three one-dimensional FS's associated with three types of chains. The q dependence of the electronic response function calculated from the electronic structure quantitatively accounts for the anisotropy of the fluctuations probed by x-ray diffuse scattering. The results validate the hidden nesting mechanism proposed for the CDW transitions in this series of bronzes.
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