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.
@article{arxiv.1110.6000,
title = {Superconductivity without Local Inversion Symmetry; Multi-layer Systems},
author = {Daisuke Maruyama and Manfred Sigrist and Youichi Yanase},
journal= {arXiv preprint arXiv:1110.6000},
year = {2015}
}
Comments
4 pages, 2 figures, proceedings of the 26th International Conference on Low Temperature Physics (LT26)