Self-interstitials and Frenkel pairs in electron-irradiated germanium

A Carvalho, R Jones, J Goss, C Janke, J Coutinho, S Öberg and PR Briddon
Physica B

First principles calculations were used to study the structures and electrical levels of the self-interstitial in Ge. We considered the possibility of structural changes consequent with change in charge state and show these have important implications in the mobility and electrical activity of the defect. The theoretical model is compared to the results of low temperature electron irradiation in germanium reported in the literature

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