Possible triplet superconducting order in a magnetic superconducting phase induced by paramagnetic pair breaking

Description

Motivated by recent thermal conductivity measurements in the superconductor CeCoIn5, we theoretically examine a possible staggered spin-triplet superconducting order to be induced by the coupled spin-density-wave (SDW) and d-wave superconducting (SC) orders in the high field and low temperature (HFLT) SC phase peculiar to this material with strong paramagnetic pair-breaking (PPB). It is shown that one type of the $��$-triplet order is consistent with the thermal conductivity data and can naturally be incorporated in the picture that the Q-phase is a consequence of the strong PPB effect inducing the SDW order and the FFLO spatial modulation parallel to the applied magnetic field.

22 pages, 11 figures. Figs.1, 8. 1nd 9 were added together with comments on NMR data

Journal

  • Physical Review B

    Physical Review B 95 (22), 2017-06-22

    American Physical Society (APS)

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