Quasiparticle interference and superconducting gap in Ca 2− x Na x CuO 2 Cl 2

  title={Quasiparticle interference and superconducting gap in Ca 2− x Na x CuO 2 Cl 2},
  author={Tetsuo Hanaguri and Yuhki Kohsaka and J. C. S{\'e}amus Davis and Christian Lupien and Ikuya Yamada and Masaki Azuma and Makoto Takano and Kazuki Ohishi and Masahiro Ono and Hiroshi Takagi},
  journal={Nature Physics},
High-transition-temperature (high-Tc) superconductivity is ubiquitous in the cuprates containing CuO2 planes, but each cuprate has its own character. The study of the material dependence of the d-wave superconducting gap (SG) should provide important insights into the mechanism of high-Tc superconductivity. However, because of the ‘pseudogap’ phenomenon, it is often unclear whether the energy gaps observed by spectroscopic techniques really represent the SG. Here, we use scanning tunnelling… Expand

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