X-ray photoemission study of NiS_{2-x}Se_x (x = 0.0 - 1.2)

  title={X-ray photoemission study of NiS\_\{2-x\}Se\_x (x = 0.0 - 1.2)},
  author={Sunanda Krishnakumar and D. D. Sarma Solid State and Structural Chemistry Unit and Indian Institute of Science and Bangalore Jawaharlal Nehru Center for Advanced Scientific Research and Bangalore},
  journal={Physical Review B},
Electronic structure of NiS_{2-x}Se_x system has been investigated for various compositions (x) using x-ray photoemission spectroscopy. An analysis of the core level as well as the valence band spectra of NiS_2 in conjunction with many-body cluster calculations provides a quantitative description of the electronic structure of this compound. With increasing Se content, the on-site Coulomb correlation strength (U) does not change, while the band width W of the system increases, driving the… Expand
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