LaNiC2: triplet pairing via reversed quantum criticality

Just as 2014 was drawing to a close, two experimental papers from different groups in Japan appeared that significantly advance our understanding of LaNiC2. The first paper provides fresh evidence of the non-unitary triplet pairing scenario we proposed back in 2009. The second paper offers tantalising hints that a quantum critical point is behind the pairing mechanism in this system, but that the critical point had been hidden from sight because it is “reversed”: the order parameter is suppressed as the pressure is reduced towards, rather than increased away from, room pressure.