Topological nodal line in superfluid ${}^3$He and the Anderson theorem

T. Kamppinen, J. Rysti, M. -M. Volard +2

Superconductivity and superfluidity with anisotropic pairing -- such as $d$-wave in cuprates and $p$-wave in superfluid ${}^3$He -- are strongly suppressed by impurities. Meanwhile,…