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Lookup NU author(s): Dr Jose Coutinho,
Professor Patrick Briddon
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The interstitial carbon-oxygen complex is one of the most prominent defects formed in e-irradiated Cz-Si containing carbon. Stress alignment investigations have shown that the oxygen atom only perturbs the carbon interstitial but the lack of a high frequency oxygen mode has been taken to imply that the oxygen atom is over-coordinated. Local vibrational mode spectroscopy and ab initio modeling are used to investigate the defect. We find new modes whose oxygen isotopic shifts, along with the piezoscopic stress-energy tensor support the trivalent model, thus providing evidence for oxygen over-coordination. © 2001 Elsevier Science B.V. All rights reserved.
Author(s): Coutinho J, Jones R, Briddon PR, Oberg S, Murin LI, Markevich VP, Lindstrom JL
Publication type: Article
Publication status: Published
Journal: Physica B: Condensed Matter
ISSN (print): 0921-4526
ISSN (electronic): 1873-2135
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