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End and Edge States: Entrapment and Polarization

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Relaxation of the Chemical Bond

Part of the book series: Springer Series in Chemical Physics ((CHEMICAL,volume 108))

Abstract

The effective atomic CN of adatoms, atoms at terrace edges, and the ends of atomic chains is even lower than that of the flat surface (4 instead of 6). Quantum entrapment is global, and polarization is subjective, depending on the electronic configuration in the valence band. Defects and edges are associated with local bond strain, entrapment, and the subjective polarization. Graphite monolayer skin only shows entrapment, but the atomic vacancy shows both entrapment and polarization—one neighbor short makes a great difference. Pt and Co islands exhibit entrapment dominance, while Au, Ag, Rh, W edges, and islands show both, which could be of use in classifying the catalytic nature of the undercoordinated specimens.

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  1. Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore

    Chang Q. Sun

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Sun, C.Q. (2014). End and Edge States: Entrapment and Polarization. In: Relaxation of the Chemical Bond. Springer Series in Chemical Physics, vol 108. Springer, Singapore. https://doi.org/10.1007/978-981-4585-21-7_13

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