Localization effects in the charge density wave state of the quasi-two-dimensional monophosphate tungsten bronzes (PO2)4(WO3)2m (m = 7, 8, 9)

J. Dumas, C. Hess, C. Schlenker, G. Bonfait, E. Gomez Marin, D. Groult, J. Marcus

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14 Citations (Scopus)

Abstract

The monophosphate tungsten bronzes (PO2)4(WO3)2m are quasi-two-dimensional conductors which show charge density wave type electronic instabilities. We report electrical resistivity and magnetoresistance measurements down to 0.30 K and in magnetic fields up to 16 T for the m = 7, 8 and 9 members of this family. We show that these compounds exhibit at low temperature an upturn of resistivity and field dependences of the magnetoresistance characteristic of localization effects. We discuss the dimensionality of the regime of localization as m is varied. We show that for m = 7, the regime is quasi-two-dimensional and three-dimensional for m = 8, 9.

Original languageEnglish
Pages (from-to)73-82
Number of pages10
JournalEuropean Physical Journal B
Volume14
Issue number1
DOIs
Publication statusPublished - 1 Mar 2000

Keywords

  • 71.45.Lr Charge-density-wave systems -
  • 72.15.Gd Galvanomagnetic and other magnetotransport effects

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