X-ray-induced electronic structure change in CuIr{sub 2}S{sub 4}

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.84.125135· OSTI ID:21596876

Gretarsson, H; Kim, Young-June ^[1]; Kim, Jungho; Casa, D; Gog, T ^[2]; Choi, K R ^[3]; Cheong, S W ^[3]

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1. Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7 (Canada)
2. CMC-XOR, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. l-PEM, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of)

The electronic structure of CuIr{sub 2}S{sub 4} is investigated using various bulk-sensitive x-ray spectroscopic methods near the Ir L{sub 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.

• OSTI ID: 21596876
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 84, Issue 12; Other Information: DOI: 10.1103/PhysRevB.84.125135; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTROSCOPY
CHARGE DENSITY
COPPER COMPOUNDS
DENSITY FUNCTIONAL METHOD
DIMERS
ELECTRONIC STRUCTURE
EMISSION SPECTROSCOPY
FLUORESCENCE
INELASTIC SCATTERING
IRIDIUM COMPOUNDS
IRRADIATION
PHYSICAL RADIATION EFFECTS
SIMULATION
SPECTRA
SULFUR COMPOUNDS
TEMPERATURE RANGE 0065-0273 K
TRANSITION TEMPERATURE
X RADIATION
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY
CALCULATION METHODS
COHERENT SCATTERING
DIFFRACTION
ELECTROMAGNETIC RADIATION
EMISSION
IONIZING RADIATIONS
LUMINESCENCE
PHOTON EMISSION
PHYSICAL PROPERTIES
RADIATION EFFECTS
RADIATIONS
REFRACTORY METAL COMPOUNDS
SCATTERING
SPECTROSCOPY
TEMPERATURE RANGE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VARIATIONAL METHODS