Numéro
J. Phys. IV France
Volume 12, Numéro 9, November 2002
Page(s) 93 - 94
DOI http://dx.doi.org/10.1051/jp4:20020367


J. Phys. IV France
12 (2002) Pr9-93
DOI: 10.1051/jp4:20020367

Electrical resistivity of the quasi-two dimensional diphosphate tungsten bronzes K $_{\rm x}$(P 2O 4) 2(WO 3)2m, m = 8

J. Dumas1, H. Devlin1, C. Schlenker1 and 0. Perez2

1  Laboratoire d'Études des Propriétés Électroniques des Solides, CNRS, BP. 166, 38042 Grenoble cedex 9, France
2  CRISMAT, ISMRA, 14032 Caen cedex, France


Abstract
We report a study of the resistivity as a function of temperature (4 K <T <300 K) of single crystals of the quasi-two dimensional diphosphate tungsten bronzes (DPTBh) K $_{\rm x}$(P 2O 4)2(WO 3)2m m=8 for 1.30 <x <1.55. A change from metallic to non-metallic behavior is observed for x <1.30. The results are discussed in terms of disorder and in relation with available band models.



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