Muon spin rotation study of the (TMTSF)2ClO4 system
- ,
- D. R. Harshmane, g(Author),
- W. J. Kosslerf(Author),
- A. Goonewardenef(Author),
- D. Ll Williamsb(Author),
- E. Kosterb(Author)
- ,
- bUniversity of British Columbia,
- cUniversity of Chicago,
- dUniversity of California, Riverside,
- eUniversity of Notre Dame,
- fCollege of William and Mary
Abstract
We report a study of the organic compound (TMTSF)2ClO 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 Tc ≃ 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 Å. The intermediate state sample entered a mixed phase state, characterized by coexisting macroscopic sized regions of superconducting and spin density wave (SDW) regions, below Tc ≃ 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.