Superconductivity without Local Inversion Symmetry; Multi-layer Systems

Details Superconductivity without Local Inversion Symmetry; Multi-layer Systems Superconductivity without Local Inversion Symmetry; Multi-layer Systems

2011-10-27

arxiv.org/abs/1110.6000v1

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures, proceedings of the 26th International Conference on Low Temperature Physics (LT26)

Scientific paper

While multi-layer systems can possess global inversion centers, they can have regions with locally broken inversion symmetry. This can modify the superconducting properties of such a system. Here we analyze two dimensional multi-layer systems yielding spatially modulated antisymmetric spin-orbit coupling (ASOC) and discuss superconductivity with mixed parity order parameters. In particular, the influence of ASOC on the spin susceptibility is investigated at zero temperature. For weak inter-layer coupling we find an enhanced spin susceptibility induced by ASOC, which hints the potential importance of this aspect for superconducting phase in specially structured superlattices.

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