Nonresonant valence-to-core x-ray emission spectroscopy of niobium.
Phys Rev B
; 972018.
Article
en En
| MEDLINE
| ID: mdl-31080938
ABSTRACT
The valence-to-core (V2C) portion of x-ray emission spectroscopy (XES) measures the electron states close to the Fermi level. These states are involved in bonding, thus providing a measure of the chemistry of the material. In this article, we show the V2C XES spectra for several niobium compounds. The Kßâ³ peak in the V2C XES results from the transition of a ligand 2s electron into the 1s core-hole of the niobium, a transition allowed by hybridization with the niobium 4p. This location in energy of this weak peak shows a strong ligand dependence, thus providing a sensitive probe of the ligand environment about the niobium.
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Phys Rev B
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2018
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Article