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Open Access Publications from the University of California

Experimental observation of incoherent-coherent crossover and orbital-dependent band renormalization in iron chalcogenide superconductors

  • Author(s): Liu, ZK;
  • Yi, M;
  • Zhang, Y;
  • Hu, J;
  • Yu, R;
  • Zhu, JX;
  • He, RH;
  • Chen, YL;
  • Hashimoto, M;
  • Moore, RG;
  • Mo, SK;
  • Hussain, Z;
  • Si, Q;
  • Mao, ZQ;
  • Lu, DH;
  • Shen, ZX
  • et al.
Abstract

The level of electronic correlation has been one of the key questions in understanding the nature of superconductivity. Among the iron-based superconductors, the iron chalcogenide family exhibits the strongest electron correlations. To gauge the correlation strength, we performed a systematic angle-resolved photoemission spectroscopy study on the iron chalcogenide series Fe1+ySexTe1-x (0

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