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Title: Probing LaMO3 Metal and Oxygen Partial Density of States Using X-ray Emission, Absorption, and Photoelectron Spectroscopy

Journal Article · · Journal of Physical Chemistry. C
DOI:https://doi.org/10.1021/jp511931y· OSTI ID:1374901
; ;  [1];  [2];  [3];
  1. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States, Department of Physics and Astrophysics, University of North Dakota, Grand Forks, North Dakota 58202, United States
  2. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
  3. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States

We examined the electronic structure in LaMO3 perovskite oxides (M = Cr, Mn, Fe, Co, Ni) by combining information from X-ray emission, absorption, and photoelectron spectroscopy. Through first-principles density functional theory simulations, we identified complementary hybridization features present in the transition metal and oxygen X-ray emission spectra. We then developed a method for the self-consistent alignment of the emission data onto a common energy scale using these features, providing a valuable supplementary technique to photoelectron spectroscopy for studying the partial density of states in perovskites. The combined information from X-ray emission and absorption was used to explore trends in electronic structure characteristics under the Zaanen–Sawatzky–Allen framework—namely the extent of metal–oxygen hybridization, band gap, and charge-transfer gap. We further established a method that allows for the experimental determination of the occupied and unoccupied band positions relative to the oxide Fermi level, as well as on an absolute energy scale.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515; SC0002633; AC02-05CH11231
OSTI ID:
1374901
Alternate ID(s):
OSTI ID: 1557990
Journal Information:
Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Vol. 119 Journal Issue: 4; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 52 works
Citation information provided by
Web of Science

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