面元磷属元素化物SrPtAs：反转对称性局部破缺的超导电性
Hexagonal pnictide SrPtAs: superconductivity with locally broken inversion symmetry
摘要：
与其他磷属元素化物不同，SrPtAs具有六方结构，含有形成蜂窝晶格的As-Pt原子层。这些层缺乏反转对称性，这使得自旋轨道耦合，我们表明，在这种材料中的超导性有显着的影响。特别是，对于传统的s波超导SrPtAs，自旋磁化率和顺磁限制场显着增强相对于通常预期的s波超导体。SrPtAs提供了具有局部破缺反转对称性的超导体的一个主要例子。
英文摘要：
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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