Hexagonal pnictide SrPtAs: superconductivity with locally broken inversion symmetry

Details Hexagonal pnictide SrPtAs: superconductivity with locally broken inversion symmetry Hexagonal pnictide SrPtAs: superconductivity with locally broken inversion symmetry

2011-11-21

arxiv.org/abs/1111.5058v1

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

Unlike other pnictides, SrPtAs has a hexagonal structure, containing layers with As-Pt atoms that form a honeycomb lattice. These layers lack inversion symmetry which allows for a spin-orbit coupling that we show has a dramatic effect on superconductivity in this material. In particular, for conventional s-wave superconductivity in SrPtAs, both the spin susceptibility and the paramagnetic limiting field are enhanced significantly with respect to that usually expected for s-wave superconductors. SrPtAs provides a prime example of a superconductor with locally broken inversion symmetry.

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