Muon spin rotation study of the (TMTSF)2ClO4 system Academic Article uri icon

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abstract

  • We report a study of the organic compound $(TMTSF)_2 ClO_4$ in both a sample cooled very slowly through the anion ordering temperature (relaxed state) and a sample cooled more rapidly (intermediate state). For the relaxed state the entire sample is observed to be superconducting below about T_c ~ 1.2 K. The second moment of the internal field distribution was measured for the relaxed state yielding an in-plane penetration depth of ~ 12000 Angstroms. The intermediate state sample entered a mixed phase state, characterized by coexisting macroscopic sized regions of superconducting and spin density wave (SDW) regions, below T_c ~ 0.87 K. These data were analyzed using a back-to-back cutoff exponential function, allowing the extraction of the first three moments of the magnetic field distribution. Formation of a vortex lattice is observed below 0.87 K as evidenced by the diamagnetic shift for the two fields in which we took intermediate state data.

authors

  • Greer, AJ
  • Harshman, DR
  • Kossler, WJ
  • Goonewardene, A
  • Williams, D Ll
  • Koster, E
  • Kang, W
  • Kleiman, Rafael
  • Haddon, RC

publication date

  • December 2003