Article Dans Une Revue EPL - Europhysics Letters Année : 1988

Pressure-induced metal-to-insulator phase transitions in the organic conductor (2,5 DM-DCNQI)2Cu

D. Jérome
A. Aumüller
  • Fonction : Auteur
P. Erk
  • Fonction : Auteur
S. Hünig
  • Fonction : Auteur
J.U. von Schütz
  • Fonction : Auteur

Résumé

The electrical resistivity along the high-conductivity axis has been measured at pressures up to 9 kbar in the novel organic conductor (2,5 DM-DCNQI)2Cu. Deviations from the usual linear behaviour of the conductivity under pressure at room temperature have been observed. Moreover, at lower temperatures metal-to-insulator phase transitions have been induced with values of transition temperatures depending on the applied pressure. The obtained results are discussed and compared with corresponding data for other organic compounds. A tentative interpretation of this novel and unusual phase diagram is proposed in terms of a mixed valence state for copper ions.

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hal-04944470 , version 1 (03-04-2025)

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S. Tomić, D. Jérome, A. Aumüller, P. Erk, S. Hünig, et al.. Pressure-induced metal-to-insulator phase transitions in the organic conductor (2,5 DM-DCNQI)2Cu. EPL - Europhysics Letters, 1988, 5 (6), pp.553-558. ⟨10.1209/0295-5075/5/6/013⟩. ⟨hal-04944470⟩
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