Spontaneous Interconfiguration Fluctuations in the Tm Monochalcogenides
- 22 April 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 32 (16), 885-889
- https://doi.org/10.1103/physrevlett.32.885
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, . 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 ± 0.1 eV for the Tm () core levels.
Keywords
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