Nodal quasiparticle meltdown in ultrahigh-resolution pump–probe angle-resolved photoemission

@article{Graf2011NodalQM,
  title={Nodal quasiparticle meltdown in ultrahigh-resolution pump–probe angle-resolved photoemission},
  author={Jeff Graf and Chris Jozwiak and Christopher L. Smallwood and Hiroshi Eisaki and Robert A. Kaindl and D-H Lee and Alessandra Lanzara},
  journal={Nature Physics},
  year={2011},
  volume={7},
  pages={805-809}
}
Where a superconductor has a node, or a zero, in the superconducting gap, low-energy excitations exist that are similar to those in normal metals and are thought to be unaffected by superconductivity. However, excitation of superconductors with a near infrared pulse reveals there is a link between these excitations and superconductivity. 

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