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Charge fluctuations and image potential at oxide-metal interfaces

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Altieri, S., Tjeng, L. H., Voogt, F. C., Hibma, T., Rogojanu, O., & Sawatzky, G. A. (2002). Charge fluctuations and image potential at oxide-metal interfaces. Physical Review B, 66(15): 155432, pp. 1-6. doi:10.1103/PhysRevB.66.155432.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0019-1770-D
Abstract
We analyze the dynamical response of the Ag metal surface to electronic excitations in a MgO(100)/Ag(100) oxide-metal interface system. Intrinsic and extrinsic surface plasmon excitations are discussed in relation to mutual interactions between the oxide and the metal. A direct relationship is established between the reduction of charge fluctuation energies in the MgO(100) layers and the image charge screening by the Ag(100) metal surface.