Wen Huang, Shenzhen Peng Cheng Laboratory
Since its discovery in 1994, the unconventional superconductivity in Sr2RuO4 has attracted tremendous interest. The prospect of it being a topological chiral p-wave superconductor, which supports Majorana fermions, makes it a potential solid state platform for topological quantum computation. However, despite the multiple signatures in support of chiral p-wave pairing, a number of key measurements in the last decade have called into question this interpretation. I will present our efforts on various fronts of the enigmatic superconductivity in this material, which culminated in the proposal of an alternative, nematic p-wave pairing. Time permitting, I shall also report our recent progress on understanding the so-called “Angular Momentum Paradox” initially raised more than 50 years ago in the study of a topological chiral superfluid – the liquid Helium-3 A-phase.