Article Dans Une Revue Synthetic Metals Année : 1995

Charge density wave instabilities in the family of monophosphate tungsten bronzes: (PO2)4(WO3)2m

A. Ottolenghi
  • Fonction : Auteur
P. Foury
J.P. Pouget
Z.S. Teweldemedhin
  • Fonction : Auteur
M. Greenblatt
  • Fonction : Auteur
D. Groult
  • Fonction : Auteur
J. Marcus
  • Fonction : Auteur
C. Schlenker
  • Fonction : Auteur

Résumé

The structural instabilities towards the formation of a charge density wave (CDW) ground state exhibited by the members of the family of monophosphate tungsten bronzes with pentagonal tunnels (MPTBp) of general formula (PO2)4(WO3)2m are studied for m=8,9. In the m=8 member two incommensurate CDW modulations are detected, but no long range order (LRO) is achieved. In the m=9 member two commensurate CDW modulations towards a LRO occurs. Evidence for a superstructure formation is also found in other members of large values of m. We emphasize the special role of the m=8 member which marks the borderline between incommensurate and commensurate CDW phase transitions.

Dates et versions

hal-04898661 , version 1 (20-01-2025)

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Citer

A. Ottolenghi, P. Foury, J.P. Pouget, Z.S. Teweldemedhin, M. Greenblatt, et al.. Charge density wave instabilities in the family of monophosphate tungsten bronzes: (PO2)4(WO3)2m. Synthetic Metals, 1995, 70 (1-3), pp.1301-1302. ⟨10.1016/0379-6779(94)02859-W⟩. ⟨hal-04898661⟩
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