A quantum critical point describes a phase transition at zero temperature when an order is suppressed, for instance by application of pressure. Here, the authors investigate the pressure dependence of a heavy fermion antiferromagnet using nuclear quadrupole resonance and reveal two quantum critical points (QCP), among which the first one marks a Fermi surface change and triggers unusual superconducting state.
- Shinji Kawasaki
- Toshihide Oka
- Guo-qing Zheng
