“Electronic Growth” of Metallic Overlayers on Semiconductor Substrates
- 15 June 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 80 (24) , 5381-5384
- https://doi.org/10.1103/physrevlett.80.5381
Abstract
We present a novel “electronic growth” model for metallic thin films on semiconductor substrates. Depending on the competition between the effects of quantum confinement, charge spilling, and interface-induced Friedel oscillations, different types of film stability are defined, as characterized by the existence of critical/magic thicknesses for smooth growth. In particular, smooth growth can be achieved only above a few monolayers for noble metals, and only for the first layer for alkali metals.Keywords
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