Order parameter and vortices in the superconducting Q-phase of CeCoIn5

Details Order parameter and vortices in the superconducting Q-phase of CeCoIn5 Order parameter and vortices in the superconducting Q-phase of CeCoIn5

2009-02-05

arxiv.org/abs/0902.0843v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures, 1 table

Scientific paper

Recently, it has been reported that the low-temperature high-magnetic field phase in CeCoIn5 (Q-phase), has spin-density wave (SDW) order that only exists within this phase. This indicates that the SDW order is the result of the development of pair density wave (PDW) order in the superconducting phase that coexists with d-wave superconductivity. Here we develop a phenomenological theory for these coexisting orders. This provides selection rules for the PDW order and further shows that the detailed structure of this order is highly constrained. We then apply our theory to the the vortex phase. This reveals vortex phases in which the d-wave vortex cores exhibit charge density wave (CDW) order and further reveals that the SDW order provides a unique probe of the vortex phase.

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