Article Dans Une Revue Journal of Physics: Condensed Matter Année : 2008

Upper critical field divergence induced by mesoscopic phase separation in the organic superconductor (TMTSF)2ReO4

C.V. Colin
B. Salameh
  • Fonction : Auteur
K. Bechgaard
  • Fonction : Auteur

Résumé

Due to the competition of two anion orders, (TMTSF)2ReO 4 presents a phase coexistence between semiconducting and metallic (superconducting) regions (filaments or droplets) in a wide range of pressures. In this regime, the superconducting upper critical field for H parallel to both c* and b′ axes presents a linear part at low fields followed by a divergence above a crossover field. This crossover corresponds to the 3D-2D decoupling transition expected in filamentary or granular superconductors. The sharpness of the transition also demonstrates that all filaments are of similar sizes and self-organize in a very ordered way. The distance between the filaments and their cross sections are estimated.

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Dates et versions

hal-04896832 , version 1 (20-01-2025)

Identifiants

Citer

C.V. Colin, B. Salameh, C.R. Pasquier, K. Bechgaard. Upper critical field divergence induced by mesoscopic phase separation in the organic superconductor (TMTSF)2ReO4. Journal of Physics: Condensed Matter, 2008, 20 (43), ⟨10.1088/0953-8984/20/43/434230⟩. ⟨hal-04896832⟩
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