| EPSRC Reference: |
GR/K55561/01 |
| Title: |
DIRECT PHONON STUDIES OF THE CARRIER-PHONON INTERAC. AND ENERGY RELAXATION IN QUASI-ID ELECTRONIC SYSTEMS |
| Principal Investigator: |
Kent, Professor A |
| Other Investigators: |
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| Department: |
Sch of Physics & Astronomy |
| Organisation: |
University of Nottingham |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 September 1995 |
Ends: |
31 August 1998 |
Value (£): |
166,667
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Summary on Grant Application Form |
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We propose to carry out an experimental study of the carrier-phonon interaction in quasi-one dimensional (1D) structures (quantum wires) using phonon techniques. The samples will be based on high mobility GaAs/A1GaAs heterostructures grown by MBE at Nottingham University. The devices are to be fabricated by a combination of electron beam lithography at the Central Microstructure Facility at DRAL and photolithography in Nottingham. Phonon absoroption, emission and drag experiments will be carried out using the techniques we have perfected during the past decade. Measurements of the mode, frequency and angular dpeendence of the phonon emissions and absoroption will be made. The primary purpose of these experiments is to obtain the first direct quantitative information regarding the details of the carrier-phonon interaction in this technologically important class of structures. This has direct relevance to device performance through its effect on the carrier mobility and the energy relaxation of hot carriers. We also plan to use acoustic phonons to spectroscipically probe the confined states and so give information regarding the nature and quality of the fabircated structures which is complementary to the conventional transport measurements.
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Key Findings |
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Potential use in non-academic contexts |
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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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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.nottingham.ac.uk |