The influence of conduction band plasmons on core-level photoemission spectra of InN

The core-level lineshape in photoemission spectra of InN is studied by high-resolution X-ray photoemission spectroscopy. The In 3d and N 1s core-levels are asymmetric, displaying a high binding energy tail which is attributed to inelastic losses to and/or screening by conduction band plasmons in the...

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Bibliographic Details
Published in:Surface science 2008-02, Vol.602 (4), p.871-875
Main Authors: King, P.D.C., Veal, T.D., Lu, Hai, Hatfield, S.A., Schaff, W.J., McConville, C.F.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Conduction band plasmon
Core-level lineshape
Cross-disciplinary physics: materials science
rheology
Electron accumulation
Exact sciences and technology
Indium nitride
Physics
X-ray photoelectron spectroscopy
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Summary:The core-level lineshape in photoemission spectra of InN is studied by high-resolution X-ray photoemission spectroscopy. The In 3d and N 1s core-levels are asymmetric, displaying a high binding energy tail which is attributed to inelastic losses to and/or screening by conduction band plasmons in the accumulation layer present at InN surfaces. The extent of the asymmetric tail decreases with decreasing surface Fermi level position associated with a lower density of electrons in the accumulation layer.
ISSN:0039-6028
1879-2758
DOI:10.1016/j.susc.2007.12.026