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Title: Experimental assignment of many-electron excitations in the photoionization of NiO

Journal Article · · Physical Review B
 [1];  [2];  [1];  [3];  [1];  [4];  [4]
  1. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Materials Measurement Science Division and Material Measurement Lab.
  2. Synchrotron SOLEIL, Saint-Aubin (France)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  4. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Physical and Computational Sciences Directorate

The absorption of a photon and the emission of an electron is not a simple, two-particle process. The complicated many-electron features observed during core photoionization can therefore reveal many of the hidden secrets about the ground and excited-state electronic structures of a material. Careful analysis of the photon-energy dependence of the Ni KLL Auger deexcitation spectra at and above the Ni 1s photoionization threshold has identified the satellite structure that appears in both the photoelectron emission and the x-ray absorption spectra of NiO as Ni metal 3d eg → Ni metal 3d eg and O ligand 2p eg → Ni metal 3d eg charge-transfer excitations, respectively. These assignments clarify the conflicting theoretical predictions of the last five decades in addition to other anomalous effects in the spectroscopy of this unique material.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Biological and Environmental Research (BER)
Contributing Organization:
Synchrotron SOLEIL, Saint-Aubin (France)
Grant/Contract Number:
SC0012704; 20170393; 10122
OSTI ID:
1464105
Alternate ID(s):
OSTI ID: 1457212
Report Number(s):
BNL-207955-2018-JAAM; PRBMDO; TRN: US1902360
Journal Information:
Physical Review B, Vol. 97, Issue 24; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

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Figures / Tables (6)