Loss for photoemission versus gain for Auger: Direct experimental evidence of crystal-field splitting and charge transfer in photoelectron spectroscopy
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- National Institute of Standards and Technology, Gaithersburg, MD (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
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.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC00112704
- OSTI ID:
- 1341499
- Alternate ID(s):
- OSTI ID: 1193886
- Report Number(s):
- BNL-108202-2015-JA; PRBMDO; R&D Project: LS001
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 20; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 17 works
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