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Over-coordinated oxygen in the interstitial carbon-oxygen complex

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.

Publication metadata

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

Year: 2001

Volume: 308-310

Pages: 305-308

ISSN (print): 0921-4526

ISSN (electronic): 1873-2135

Publisher: Elsevier


DOI: 10.1016/S0921-4526(01)00856-0


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