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Article Dans Une Revue Journal de Physique Lettres Année : 1982

Specific heat measurements of organic superconductivity in (TMTSF) 2ClO4

P. Garoche
  • Fonction : Auteur
R. Brusetti
  • Fonction : Auteur
D. Jérome
  • Fonction : Auteur
K. Bechgaard
  • Fonction : Auteur

Résumé

The specific heat of the organic superconductor (TMTSF)2ClO 4 has been measured between 0.4 and 2 K. A large anomaly of the electronic contribution at 1.22 K has been attributed to the onset of three-dimensional superconducting order. There is a large magnetic field dependence of the electronic contribution above 1.22 K which is not characteristic of a normal conducting state. The application of a magnetic field of 63 kOe along the c*-axis of the single crystals restores a ground state exhibiting a very low density of states at the Fermi level (a narrow gap semiconducting or a semimetallic state). A phase transition towards a conducting state with a finite density of states at Fermi level is visible around 1.4 K. Our specific heat results support the existence of a wide 1-D superconducting fluctuating regime.
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Dates et versions

jpa-00232023 , version 1 (04-02-2008)

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P. Garoche, R. Brusetti, D. Jérome, K. Bechgaard. Specific heat measurements of organic superconductivity in (TMTSF) 2ClO4. Journal de Physique Lettres, 1982, 43 (5), pp.147-152. ⟨10.1051/jphyslet:01982004305014700⟩. ⟨jpa-00232023⟩

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