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NATURE AND DIFFUSION OF THE SELF-INTERSTITIAL IN SILICON

MASRI, P; HARKER, AH; STONEHAM, AM; (1983) NATURE AND DIFFUSION OF THE SELF-INTERSTITIAL IN SILICON. J PHYS C SOLID STATE , 16 (18) L613 - L616. 10.1088/0022-3719/16/18/003. Green open access

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Abstract

The authors exploit self-consistent, semi-empirical molecular orbital calculations (CNDO) for large silicon clusters to characterise self-interstitials. Hexagonal (I+) and split (100) forms (I- and probably I0) are favoured among the several forms investigated. Possible extended high-temperature forms are not discussed. The results imply Bourgoin-Corbett (1972) athermal diffusion in p-Si and low-activation energy classical motion in n-Si; local excitation enhanced motion is possible, though not verified, but local heating is unlikely. Results agree well with experiment, both for Si and in understanding the different behaviour of silicon and diamond. The energetic advantage of the split form predicted is also supported by the observed split impurity interstitials and unidentified defects, related to the self-interstitial, observed in structures similar to the split (100) form.

Type: Article
Title: NATURE AND DIFFUSION OF THE SELF-INTERSTITIAL IN SILICON
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/0022-3719/16/18/003
Publisher version: http://dx.doi.org/10.1088/0022-3719/16/18/003
Language: English
Additional information: Text made available to UCL Discovery by kind permission of IOP Publishing, 2012
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/157073
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