Abstract
Spontaneous interconfiguration fluctuations have been detected in TmTe and TmSe by x-ray photoemission. The resulting instantaneous picture of the Tm ions fluctuating between the divalent and trivalent state within the same environment allows a direct measurement of the magnitude of the Coulomb correlation energy, ${U}_{\mathrm{eff}}$. Spontaneous interconfiguration fluctuations are shown also to affect the binding energies of core levels within the same rare-earth ion, resulting in a chemical shift of 3.5 \ifmmode\pm\else\textpm\fi{} 0.1 eV for the Tm ($5p$) core levels.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
