Pronounced drop of ${}^{17}$O NMR Knight shift in superconducting state of Sr${}_2$RuO${}_4$

A. Pustogow, Yongkang Luo, A. Chronister +9

The superconducting state in the quasi-two-dimensional and strongly correlated Sr${}_2$RuO${}_4$ is uniquely held up as a solid state analog to superfluid ${}^3$He-$A$, with an odd-parit…