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

Ken-ichi Hosoya; Ryusuke Ikeda

doi:10.1103/PhysRevB.95.224513

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

Ken-ichi Hosoya, Ryusuke Ikeda

DOI 10.1103/PhysRevB.95.224513 · Physical Review B

T1

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Abstract

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 π-triplet order is consistent with that explaining the thermal conductivity data and can naturally be incorporated in the picture that the HFLT phase is a consequence of the strong PPB effect inducing the SDW order and the FFLO spatial modulation parallel to the applied magnetic field.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown