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Title: Loss for photoemission versus gain for Auger: Direct experimental evidence of crystal-field splitting and charge transfer in photoelectron spectroscopy

Here, we find a 5 eV satellite in the Ti1s photoelectron spectrum of the transition-metal oxide SrTiO 3. This satellite appears in addition to the well-studied 13 eV structure that is typically associated with the Ti2p core line. We give direct experimental evidence that the presence of two satellites is due to the crystal-field splitting of the metal 3d orbitals. They originate from ligand 2pt 2g → metal3dt 2g and ligand 2pe g → metal 3de g monopole charge-transfer excitations within the sudden approximation of quantum mechanics. This assignment is made by the energetics of the resonant and high-energy threshold behaviors of the TiK–L 2L 3 Auger decay that follows Ti1s photoionization.
Authors:
 [1] ;  [1] ;  [2]
  1. National Institute of Standards and Technology, Gaithersburg, MD (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Report Number(s):
BNL-108202-2015-JA
Journal ID: ISSN 1098-0121; PRBMDO; R&D Project: LS001
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 91; Journal Issue: 20; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1341499
Alternate Identifier(s):
OSTI ID: 1193886

Woicik, J. C., Weiland, C., and Rumaiz, A. K.. Loss for photoemission versus gain for Auger: Direct experimental evidence of crystal-field splitting and charge transfer in photoelectron spectroscopy. United States: N. p., Web. doi:10.1103/PhysRevB.91.201412.
Woicik, J. C., Weiland, C., & Rumaiz, A. K.. Loss for photoemission versus gain for Auger: Direct experimental evidence of crystal-field splitting and charge transfer in photoelectron spectroscopy. United States. doi:10.1103/PhysRevB.91.201412.
Woicik, J. C., Weiland, C., and Rumaiz, A. K.. 2015. "Loss for photoemission versus gain for Auger: Direct experimental evidence of crystal-field splitting and charge transfer in photoelectron spectroscopy". United States. doi:10.1103/PhysRevB.91.201412. https://www.osti.gov/servlets/purl/1341499.
@article{osti_1341499,
title = {Loss for photoemission versus gain for Auger: Direct experimental evidence of crystal-field splitting and charge transfer in photoelectron spectroscopy},
author = {Woicik, J. C. and Weiland, C. and Rumaiz, A. K.},
abstractNote = {Here, we find a 5 eV satellite in the Ti1s photoelectron spectrum of the transition-metal oxide SrTiO3. This satellite appears in addition to the well-studied 13 eV structure that is typically associated with the Ti2p core line. We give direct experimental evidence that the presence of two satellites is due to the crystal-field splitting of the metal 3d orbitals. They originate from ligand 2pt2g → metal3dt2g and ligand 2peg → metal 3deg monopole charge-transfer excitations within the sudden approximation of quantum mechanics. This assignment is made by the energetics of the resonant and high-energy threshold behaviors of the TiK–L2L3 Auger decay that follows Ti1s photoionization.},
doi = {10.1103/PhysRevB.91.201412},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 20,
volume = 91,
place = {United States},
year = {2015},
month = {5}
}