Quasiparticle mass enhancement approaching optimal doping in a high- <i>T</i> <sub>c</sub> superconductor
Quasiparticle mass enhancement approaching optimal doping in a high- <i>T</i> <sub>c</sub> superconductor
In the quest for superconductors with high transition temperatures (T$_\mathrm{c}$s), one emerging motif is that unconventional superconductivity is enhanced by fluctuations of a broken-symmetry phase near a quantum-critical point. While recent experiments have suggested the existence of the requisite broken symmetry phase in the high-T$_\mathrm{c}$ cuprates, the signature of quantum-critical …