Thermal double donors in Si and Ge
2001 (Engelska)Ingår i: Physica. B, Condensed matter, ISSN 0921-4526, E-ISSN 1873-2135, Vol. 308, s. 8-12Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
Three experiments appear to cast doubt on self-interstitial-free models of the family of thermal donors, based on oxygen defects of increasing size. These are (a) the rapid transformation of TDD(N) into TDD(N+1) with activation energies considerably lower than that of oxygen diffusion, (b) the lack of any appreciable spin-density on oxygen in TDD(N)+, and (c) the observation of only two oxygen related vibrational modes associated with each donor. However, we show that the oxygen-only model of the donors is compatible with experiment for a structure involving an insulating core with normal oxygen coordination, surrounded by over-coordinated oxygen atoms which are responsible for the donor activity. It is also shown that the calculated stress-energy tensors for the early donors are in good agreement with the measurements.
Ort, förlag, år, upplaga, sidor
2001. Vol. 308, s. 8-12
Nationell ämneskategori
Beräkningsmatematik
Forskningsämne
Teknisk-vetenskapliga beräkningar
Identifikatorer
URN: urn:nbn:se:ltu:diva-10920DOI: 10.1016/S0921-4526(01)00649-4ISI: 000173660100003Scopus ID: 2-s2.0-4243660884Lokalt ID: 9d015bb0-c0e4-11db-834c-000ea68e967bOAI: oai:DiVA.org:ltu-10920DiVA, id: diva2:983868
Anmärkning
Validerad; 2001; 20070220 (kani)
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