| EPSRC Reference: |
GR/L41219/01 |
| Title: |
LIGHT SCATTERING FROM INTERACTING ELECTRON SYSTEMS |
| Principal Investigator: |
Hughes, Dr H |
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| Department: |
Physics |
| Organisation: |
University of Cambridge |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
30 March 1998 |
Ends: |
29 September 2000 |
Value (£): |
101,275
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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The dynamics of free carriers are crucial to the operation of many electronic devices, and Raman spectroscopy is a rich source of information on their individual and collective behaviour. Recent progress in growth and fabrication techniques in the Cavendish (Prof M Pepper) now allows the production of novel structures incorporating two (and lately three) parallel interacting 2DEGs which can be independently contacted and which have both back and front gates. These high quality tuneable systems have huge experimental flexibility, and are ideal for investigating inter-layer Coulomb interactions and complex correlation effects in electron plasmas in small devices. Raman spectroscopy will be used to study the single particle and collective excitations of these double-layer 2DEG systems, including the effects of applied electric and magnetic fields, and will provide information on many-body effects in solid state plasmas, inter-wall screening, plasma instabilities, and the behaviour of carrier streams under device conditions. The measurements will provide insights into the electron-electron and electron-photon interactions in low dimensional devices and materials, and input to developing theoretical models of these complex effects. A scanning near-field optical microscope (EPSRC grant recently awarded to Dr DR Richards) will enable measurements with high spatial resolution (-50nm).
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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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 |
| Summary |
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| Date Materialised |
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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.cam.ac.uk |