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Electronic structure and transport properties of K-doped blue bronze Rb0.15K0.15MoO3

Authors
Journal
Materials Letters
0167-577X
Publisher
Elsevier
Publication Date
Volume
61
Issue
28
Identifiers
DOI: 10.1016/j.matlet.2007.04.003
Keywords
  • Blue Bronze
  • Charge-Density-Wave
  • Electronic Structure

Abstract

Abstract Single crystals of K-doped blue bronze Rb 0.15K 0.15MoO 3 and Rb 0.3MoO 3 have been investigated by measurements of the X-ray photoemission spectrum (XPS), electrical resistivity and thermoelectric power, respectively. Analysis of the XPS data reveals that two final states representing alternate screening channels coexist in Rb 0.15K 0.15MoO 3. Compared with the pure bronze, the Mo sites of the doped sample contain less 4d electrons which reflected in the movement of Mo3d spectrum. Due to the discrepancy of electronic structure, the K ion doping results in the notable increase of the single particle activation energy and decrease of the thermoelectric power in the charge density wave state.

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