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Primary defects in n-type irradiated germanium: a first-principles investigation
University of Exeter.
University of Exeter.
University of Exeter.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.ORCID iD: 0000-0002-0292-1159
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2008 (English)In: Solid State Phenomena, ISSN 1012-0394, E-ISSN 1662-9779, Vol. 131-133, p. 253-258Article in journal (Refereed) Published
Abstract [en]

The properties of point defects introduced by low temperature electron irradiation of germanium are investigated by first-principles modeling. Close Frenkel pairs, including the metastable fourfold coordinated defect, are modelled and their stability is discussed. It is found that damage evolution upon annealing below room temperature can be consistently explained with the formation of correlated interstitial-vacancy pairs if the charge-dependent properties of the vacancy and self-interstitial are taken into account. We propose that Frenkel pairs can trap up to two electrons and are responsible for conductivity loss in n-type Ge at low temperatures.

Place, publisher, year, edition, pages
2008. Vol. 131-133, p. 253-258
National Category
Computational Mathematics
Research subject
Scientific Computing
Identifiers
URN: urn:nbn:se:ltu:diva-8908Local ID: 775063f0-3ba6-11dd-8e42-000ea68e967bOAI: oai:DiVA.org:ltu-8908DiVA, id: diva2:981846
Note
Validerad; 2008; 20080616 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Öberg, Sven

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