Optical experiments on the Si(111)-2x1 surface show that the absorption peak due to dangling-bond transitions exhibits a blueshift upon oxygen exposure. The effect is interpreted as due to quantum confinement of surface electrons in pi-bonded chains of atoms, whose length decreases with oxygen uptake (a particle-in-a-box effect, the box being one dimensional). This conlusion is suported by numerical simulation of the optical spectra.

Optical absorption measurements of electron quantum confinement in Si(111)-2×1 surface chains

BUSSETTI, GIANLORENZO;
2010

Abstract

Optical experiments on the Si(111)-2x1 surface show that the absorption peak due to dangling-bond transitions exhibits a blueshift upon oxygen exposure. The effect is interpreted as due to quantum confinement of surface electrons in pi-bonded chains of atoms, whose length decreases with oxygen uptake (a particle-in-a-box effect, the box being one dimensional). This conlusion is suported by numerical simulation of the optical spectra.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/637373
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