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Compositional changes on GaN surfaces under low-energy ion bombardment studied by synchrotron-based spectroscopies

Deenapanray, Prakash N. K.; Petravić, M.; Kim, K.-J.; Kim, B.; Li, G.


We have investigated compositional changes on GaNsurfaces under Ar-ion bombardment using synchrotron-based high-resolution x-rayphotoemission (PES) and near-edge x-ray absorption fine structure(NEXAFS)spectroscopy. The low-energy ion bombardment of GaN produces a Ga-rich surface layer which transforms into a metallic Ga layer at higher bombarding energies. At the same time, the photoemissionspectra around N 1s core levels reveal the presence of both uncoordinated nitrogen and nitrogen...[Show more]

CollectionsANU Research Publications
Date published: 2003-12-15
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.1626792


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