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Details of Grant 

EPSRC Reference: GR/J34484/01
Title: TOTAL ENERGY CALCULATIONS TO EXAMINE SEMICONDUCTOR DEFECTS AND BEHAVIO UR UNDER HIGH PES. TREATMENT
Principal Investigator: Ackland, Professor GJ
Other Investigators:
Pawley, Professor G
Researcher Co-Investigators:
Project Partners:
Department: Sch of Physics and Astronomy
Organisation: University of Edinburgh
Scheme: Standard Research (Pre-FEC)
Starts: 31 August 1994 Ends: 30 October 1997 Value (£): 92,619
EPSRC Research Topic Classifications:
Materials Characterisation
EPSRC Industrial Sector Classifications:
Related Grants:
Panel History:  
Summary on Grant Application Form
Within the 'Grand Challenge' we have already demonstrated the reliability and accuracy of CETEP in calculating total energies. We are now in a position to apply this method to problems which cannot be addressed experimentally. The prospect of combining quantum mechanical simulations with crystallography to tackle problems intractible to either method alone were illustrated by our recent discovery of an inversion domain microstructure in InSb. A vast number of problems can now be resolved in this way, but for practical purposes we have decided to restrict ourselves to studying semiconductors, their defects and high pressure phases. In addition to determining configurations, we expect to shed some light on kinetic details of the metallisation transition, and to predict the conditions under which new phases of material may be synthesised. Our recent study of BCB and ST12 silicon suggests that this is a promising avenue to explore. We will also examine epitaxial multilayers to determine the effects of strain and relaxation at interface on their bulk properties
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Organisation Website: http://www.ed.ac.uk