Reduction of Coulomb and charge-transfer energies in oxide films on metals
- 15 January 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 59 (4) , R2517-R2520
- https://doi.org/10.1103/physrevb.59.r2517
Abstract
Using the MgO/Ag(100) interface as a model system, we demonstrate that Coulomb and charge-transfer energies in oxide layers deposited on a highly polarizable medium like a metal, are reduced from their bulk values, by as much as 1.8 eV and 2.5 eV, respectively. The use of efficient image potential screening may provide a new method to alter various transition temperatures and properties of correlated oxides.Keywords
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