| EPSRC Reference: |
GR/J80320/01 |
| Title: |
REFLECTION ANISOTROPY SPECTROSCOPY (RAS) : THEORETICAL AND EXPERIMENTAL INVESTIGATIONS OF TEST SYSTEMS |
| Principal Investigator: |
Matthai, Dr C |
| Other Investigators: |
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| Project Partners: |
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| Department: |
School of Physics and Astronomy |
| Organisation: |
Cardiff University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
14 February 1995 |
Ends: |
13 February 1997 |
Value (£): |
67,262
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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Optical techniques are among the most powerful non destructive methods used to probe the electronic structure of materials. Reflection Anisotropy Spectroscopy (RAS) appears like the most promising optical technique to probe the detailed electronic structures of solid surfaces including the growth in reactors such as MBE and MOVPE. Investigations thus far demonstrate clearly that the RAS spectrum contains a great deal of information regarding many aspects of the surface and in particular the detailed nature of the surface bonds. To extract this information and to develop the potential of the technique to its full extent there is an urgent need for theoretical studies coupled to experiments on carefully chosen test systems. We therefore intend to carry out studies of RAS for the GaAs(100) reconstructed surfaces, Sn on Si (111) and InGaAs(100). Following our successful preliminary studies the linear optical response will be calculated using ab initio pseudopotential and self consistent tight binding techniques. On the experimental side we will continue RAS with other surface science techniques (RHEED, XPS and STM) to enable a thorough characterisation of the surface thus aiding theoretical interpretation.
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Key Findings |
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.cf.ac.uk |