Journal
PHYSICAL REVIEW B
Volume 84, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.125135
Keywords
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Funding
- NSERC of Canada
- Canadian Foundation for Innovation
- Ontario Ministry of Research and Innovation
- U.S. DOE, Office of Science, Office of Basic Energy Sciences [W-31-109-ENG-38]
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The electronic structure of CuIr2S4 is investigated using various bulk-sensitive x-ray spectroscopic methods near the Ir L-3 edge: resonant inelastic x-ray scattering (RIXS), x-ray absorption spectroscopy in the partial fluorescence yield mode, and resonant x-ray emission spectroscopy. A strong RIXS signal (0.75 eV) resulting from a charge-density-wave gap opening is observed below the metal-insulator transition temperature of 230 K. The resultant modification of electronic structure is consistent with the density functional theory prediction. In the spin-and charge-dimer disordered phase induced by x-ray irradiation below 50 K, we find that a broad peak around 0.4 eV appears in the RIXS spectrum.
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