Electronic structure and chemical reactivity of oxide-metal interfaces: 
MgO(100)/Ag(100)

Altieri, S.; Tjeng, L. H.; Sawatzky, G. A.

doi:10.1103/PhysRevB.61.16948

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Electronic structure and chemical reactivity of oxide-metal interfaces: MgO(100)/Ag(100)

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Altieri, S., Tjeng, L. H., & Sawatzky, G. A. (2000). Electronic structure and chemical reactivity of oxide-metal interfaces: MgO(100)/Ag(100). Physical Review B, 61(24), 16948-16955. doi:10.1103/PhysRevB.61.16948.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-1E20-F

Abstract

We present an electron spectroscopy investigation of the MgO(100)/Ag(100) oxide-metal interface electronic structure. We find that the O 2p states strongly hybridize with the Ag 5sp band and only weakly with the Ag 4d band. As a result of these interactions, a substantial density of states with a large oxygen antibonding character is pushed above the Fermi level, determining the chemical bonding at the oxide-metal interface. One striking consequence of such an electronic structure is the strong chemical activity of the interface toward H2O dissociative chemisorption.